FCC ID: BKMAP010 GPS Sports Monitor

GPS Sports Monitor J-57 User Manual Welcome J-57 User Manual Welcome Features Measuring a variety of activities Measure running and walking data and check results data. Measure distance, pace, routes, and other information. U Measurable items on page 31 Measure the time that has elapsed since each start (split time) and lap times. U Measuring workouts on page 31 Check the measured results/data. U Stopping and saving measuring on page 34 This device features many other functions. Measure pulse (heart rate). (Pulse measurement function):

U Measuring Pulse (Heart Rate) during Exercise on page 29 AT Lap:

Device records your lap times for distances you have set beforehand. U Recording laps automatically (AT Lap) on page 39 AT Pause:

The device automatically stops measuring when you stand still and then restarts measuring once you start moving again. U Pausing and resuming measuring automatically (AT Pause) on page 40 Training:

The device measures specific time and distance goals that you configure./

U Measuring preconfigured time and distances (Training) on page 41 Notifications:

The device vibrates to notify you when a lap time is recorded, when a target distance has been reached, etc. U Vibration on page 72 2 J-57 User Manual Measuring activity Welcome Measure various daily activities such as desk work, household chores, and so on. Measure distance, number of steps, calories burnt, and other information. U Measuring Daily Activity (Meas. Activity) on page 57 Set a target number of steps and view your daily progress. U Configuring a target number of steps on page 61 View the past seven days worth of activity data. U Checking your activity on page 60 Changing device settings Other features Device settings can be configured to individual preferences. Contrast:

This setting is used to adjust the screen contrast. U Contrast on page 72 Vibration:

Vibrates each time a lap is recorded. U Vibration on page 72 Initialization:

This setting initializes the device memory and information. U Initializing the device on page 83 This device supports the Quasi-Zenith Satellite System (QZSS). This device is equipped with a stride sensor so that your distance and pace can still be measured when in locations with poor GPS signal reception, such as in tunnels or indoors. U About the stride sensor on page 28 Measures heart rate. U Measuring Pulse (Heart Rate) during Exercise on page 29 U Activity data you can check on page 60 With the Epson View companion application, you can view and manage your workout and activity data from your PC or smartphone. U Managing data with the companion application on page 55 3 J-57 User Manual Contents Contents Welcome. 2 Features. 2 Overview of the ProSense. 7 Brief description of the ProSense. 8 Brief description of the User's Guide and Startup Guide. 9 Descriptions in the User's Guide. 9 Conventions used in operation procedures. 9 Caution. 10 Using this Device Safely. 11 Symbols in this Manual. 11 Product precautions. 11 USB Charging clip precautions. 12 Notes on electromagnetic waves. 13 Included items and optional accessories. 14 Included items. 14 Optional accessories. 14 Setup. 15 Charging the device. 16 Configuring initial settings. 19 Configuring the device directly. 20 Device screens. 21 Screen display. 21 Battery Levels. 22 Locking and unlocking the buttons. 24 Locking the buttons. 24 Turning the device on and off. 25 Turning on the device. 25 Device sensors. 26 GPS signal reception (GPS positioning). 26 About the stride sensor. 28 Measuring Pulse (Heart Rate) during Exercise. 29 Measuring Your Workout. 30 Measuring workouts. 31 Measurable activities. 31 Measurable items. 31 Measurement preparation (selecting the Activity Type). 33 Starting measuring. 34 Pausing and resuming measuring. 34 Stopping and saving measuring. 34 Checking data during measuring. 35 4 J-57 User Manual Contents Recording lap times during measuring. 36 Changing Measure Set (GPS measurement settings). 37 Configuring settings. 37 List of Measure Set. 38 Recording laps automatically (AT Lap). 39 Pausing and resuming measuring automatically (AT Pause). 40 Measuring preconfigured time and distances (Training). 41 Setting and measuring paces (target pace). 43 Setting time/distance training sessions with high/low intensity intervals(interval training). 44 Using A-GPS to reduce the GPS positioning time. 45 Configuring the operation of the backlight during measuring. 45 Configuring workout notifications. 45 Measuring time (Stopwatch). 47 Estimating VO2max. 48 What is VO2max. 48 VO2max Standard (ml/kg/min) by Gender/Age. 50 Checking Workout Measurement Data. 51 Checking history data from previous measurement. 52 Measurement data that can be checked in recall. 53 Deleting measurement data from the history. 54 Managing data with the companion application. 55 Starting wireless communication. 56 Using track activity measurement function effectively. Measuring Daily Activity (Meas. Activity). 57 Track activity measurement function. 58 58 Enabling and Disabling Measuring Activity. 59 Checking your activity. 60 Activity data you can check. 60 Checking current activity (Track Activity screen). 60 Checking previous activity data (Recall screen). 61 Configuring a target number of steps. 61 Checking your target number of steps progress. 62 Stop measuring your activity. 63 Usage Examples for Some Typical Scenarios. 64 Measuring marathons and walking sessions. 65 Configuring training workouts for races. 66 Configuring racing goals. 67 Checking your daily condition (Activity). 68 Changing Device Settings. 69 Changing device settings. 70 Configuring the device from a smartphone. 70 5 J-57 User Manual Contents Configuring the device from a PC. 70 Configuring the Device Directly. 70 Configuring the Device from a Smartphone. 71 Configuring the Device from a PC. 71 Settings. 72 Bluetooth. 72 Activity. 72 Vibration. 72 Display. 72 System. 73 73 74 Turn Off. Certification. Main device and band. Waterproof performance. Batteries. Internal rechargeable device battery. Regular Maintenance. 75 Cleaning the device. 76 76 77 77 77 Disposing of the device. 77 Problem solving. 78 Updating the firmware. 81 Checking the firmware version. 81 Updating the firmware. 81 Restarting Device. 82 Initializing the device. 83 Appendix. 84 Product specifications. 85 Device. 85 Option specifications. 86 Understanding the icons. 87 Glossary. 88 Trademarks. 90 6 J-57 User Manual Overview of the ProSense Overview of the ProSense U Brief description of the ProSense on page 8 U Brief description of the User's Guide and Startup Guide on page 9 U Using this Device Safely on page 11 U Included items and optional accessories on page 14 7 J-57 User Manual Overview of the ProSense Brief description of the ProSense This device is a sports watch designed with GPS functionality to measure and record running and other workout activity. This device also tracks and records other types of daily activity. With the Epson View companion application, you can analyze, review, and manage your workout and activity data from your PC or smartphone. You can also create and track training plans in efforts to accomplish longer term goals such as completing marathons. 8 J-57 User Manual Overview of the ProSense Brief description of the User's Guide and Startup Guide Thank you for your purchase of the GPS Sports Monitor "ProSense". To ensure correct use of the device, make sure to read the included Startup Guide and then refer to the User's Guide as necessary. Keep the included Startup Guide easily available when you need help with the device. Descriptions in the User's Guide Warning Caution Menu Name This symbol represents precautions or instructions that must be followed. Incorrect handling due to the disregard of this information may result in product failure or incorrect operation. Indicates additional explanations and related information. Indicates menu items displayed on the screen of the device. START/STOP button Indicates the device buttons. U Indicates related pages. Click the link in blue text to display the related page. Conventions used in operation procedures Actual procedure Press the ENTER button. Procedure as described in this document Press the ENTER button > press the UP or DOWN button >

select Profile > and then press the ENTER button. Press the UP or DOWN button and then select Profile. Press the ENTER button. 9 J-57 User Manual Caution Overview of the ProSense Unapproved copying of part or all of this guide is strictly forbidden. The content of this guide is subject to change without prior notice. Although every effort has been made to ensure the accuracy of this guide, contact us if you have any questions or notice any errors in descriptions in the content of this guide. Despite the preceding clause, we cannot accept any responsibility for mishandling due to errors in this guide. We cannot accept any responsibility for malfunctions and so on that occur due to ignoring the content of this guide, the device being handled inappropriately, repairs or modifications performed by a third party that is not our company or appointed by our company. 10 J-57 User Manual Overview of the ProSense Using this Device Safely Make sure to read the included "Using this Device Safely" document before using the product to ensure safe use. Incorrect handling may result in product failure or incorrect operation. Keep the included Startup Guide and the User's Guide (this document) easily available when you need help resolving issues with the device. Confirm the laws and regulations of the applicable country when traveling to other countries with this device. This product is not a medical device. Use this device as a workout aid. Symbols in this Manual The following symbols are used in this guide to indicate potentially dangerous operations or handling. Make sure you understand these warnings before using the product. Warning This symbol indicates information that, if ignored, could possibly result in serious personal injury. Caution Ignoring these instructions and mishandling this device could cause injury or damage to property. This symbol indicates an action that should be done. This symbol indicates an action that must not be done. Product precautions Warning Do not overexert yourself or work to exhaustion. Always seek medical attention immediately if you are feeling unwell or for any injury. Do not watch the device while exercising. Doing so may result in tumbling or slipping. Pay close attention to your surroundings while using the device. Do not use while scuba diving. Use of this device may result in allergic reactions, itchiness of the skin, or irritation. If your skin has a reaction to the device, first try loosening the belt and reposition the device. If the situation does not improve, immediately stop use of the device and seek medical attention. 11 J-57 User Manual Overview of the ProSense Warning Do not use or store this device in the following environments. Doing so may result in electric shock, fire, or product malfunction and damage. Locations exposed to extreme temperature/humidity Near volatile substances Dusty places Near a fire Near sources of magnetic energy such as TVs, speakers, and magnetic necklaces Do not attempt to disassemble or repair this product. Doing so may cause electric shock or other accident. Do not leave this product within reach of young children. Use this product at your own risk. Seiko Epson shall not be liable for damages caused to the owner of the device or any third party. Caution If you sweat while wearing this device, remove the device and then completely wipe sweat and any dirt off your wrist and the device. Continuing to wear the device while wet with sweat or dirty may cause itchiness and irritation. This device is water resistant up to 5 bars of pressure. Do not press any buttons while the device is underwater. This may effect the quality of the waterproofing. Do not use the device while in a bath or sauna. Steam, soap, and minerals in the water could degrade water resistance or cause rust. USB Charging clip precautions Warning Do not use a damaged USB Charging clip. Doing so may result in fire or product malfunction./

Do not use the USB Charging clip if dusty or dirty. Doing so may result in fire. Do not use the USB Charging clip if you notice any smoke, odor, or abnormal noise. Doing so may result in fire. If some abnormalities occur during use, immediately disconnect the USB Charging clip cable and contact a repair center. Do not use USB Charging clip if any foreign substances or water/other liquids get inside the device. Doing so may result in electric shock or fire./ If this happens, immediately disconnect the USB Charging clip cable and contact a repair center. Disconnect the cable when the USB Charging clip is not in use. Metal or dust/foreign matter collecting on the terminals may result in burns or fire. Do not use the USB Charging clip to charge other devices. This device must be charged only with the USB Charging clip. Do not use any other charging method. Doing so may result in product malfunction, electric shock, or fire. 12 J-57 User Manual Overview of the ProSense Notes on electromagnetic waves This device is equipped with Bluetooth Smart technology. This function enables wireless communication of measurement data between the device and a smartphone. This device has been classified as a low electronic data communication system based on Radio Law. Therefore, this device does not require a radio station license. The following acts may be punishable by law. Disassembling or remodeling the device Removing the verification or certification number for the device Frequency This device uses the frequency bands 2.402 to 2.480 GHz. Other wireless devices may use the same frequency. Note the following points to avoid wireless interference with other wireless devices. Precautions when performing wireless communication This device operates on the 2.4 GHz band. This device operates in the same frequency bandwidth as industrial, scientific, and medical devices such as microwave ovens and mobile object identification (RF-ID) systems (licensed premises radio stations, amateur, and unlicensed specified low-power radio stations (hereafter "other radio stations")) used in factory production lines. 1. Before using this device, make sure there are no "other radio stations" being used in the vicinity. 2. If this device causes RF interference between the device and "other radio stations", promptly move to a different location, stop using the device, and contact your local reseller to ask for advice on preventing interference (for example setting up partitions). 3. In addition, when harmful radio wave interference occurs between the device and "other radio stations", and refer to "Contacting us about this product" to contact our service centre. Warning If you notice any abnormalities on your skin and so on, stop using the device immediately and contact a specialist. In areas in which usage is restricted, such as on airplanes and in hospitals, follow the rules and regulations provided (such as in-flight announcements). Do not use the device if you have a surgically implanted medical device such as a cardiac pacemaker. Do not bring the device into an operating room, intensive care unit, and so on, and do not use the device near medical equipment. Radio waves from the device may interfere with electronic medical equipment causing the equipment to malfunction and cause an accident. 13 J-57 User Manual Overview of the ProSense Included items and optional accessories Included items Make sure you check that all of the following items have been supplied with this product. If any of these items are missing, contact your local reseller. Device USB Charging clip (charging and communication device) Notes on Usage Startup Guide Warranty Optional accessories You can purchase the following optional extras. Contact your local reseller for more information. AC adapter USB Charging clip (charging and communication device) 14 J-57 User Manual Setup Setup U Charging the device on page 16 U Configuring initial settings on page 19 U Device screens on page 21 U Battery Levels on page 22 U Locking and unlocking the buttons on page 24 U Turning the device on and off on page 25 U Device sensors on page 26 15 J-57 User Manual Setup Charging the device c Important Charge this device before using it for the first time. Use the specified USB Charging clip. Do not attach the USB Charging clip to a wet or dirty device. Doing so may cause corrosion or malfunction of the device or USB Charging clip contact points, or communication failures. Charge in environments with ambient temperatures of 5 to 35C. Attempting to charge the device in any other environment causes the following charge error screen to appear and the device to stop charging. When it returns to a suitable temperature, charging resumes. Bluetooth is enabled when the USB Charging clip is attached to the device. Disable Bluetooth when not in use. U ON/OFF on page 72 A Attach the USB Charging clip to the device. Turn the device over so that the glass faces down. Hold the device up and then attach the USB Charging clip so that the triangle marks on the back side of the device and the USB Charging clip are in alignment. 16 J-57 User Manual Setup B Start charging the device. Two charging methods are available. oUsing the AC adapter to charge the device Connect the USB plug of the USB Charging clip to the USB port in the AC adapter and then connect the AC adapter to an electrical outlet. We recommend using the optional AC adapter to charge the device. Using an incompatible AC adapter may result in failure to charge or improper operation. oUsing a PC to charge the device Connect the USB plug of the USB Charging clip to the USB port in the PC. This method will not necessarily be successful with all computers. Do not use a USB hub or other intermediate device. Connect the USB Charging clip directly to the PC. Charging will start automatically once devices are properly connected. The typical average time to fully charge the device is 2.5 to 3.5 hours. This can vary depending on conditions. Note You can use the Epson View companion application to configure initial settings from the PC while charging the device. Visit the following website to download Epson View, create an account, and learn how to use the application to configure the device and perform other operations. U https://view.epson.com/

17 J-57 User Manual Setup C Check that charging is complete. Charging is complete when the battery icon displays 100%. Note Once the device is fully charged, the overcharge prevention feature engages. The device will not be damaged even if you continue to charge the battery. The Time screen appears when configuring initial settings while charging the device. D After the device is fully charged, disconnect the USB Charging clip from the device. Disconnect the cable from the USB port in the PC or AC adapter. 18 J-57 User Manual Setup Configuring initial settings Initial settings include personal details such as height and weight. Configuring this information improves accuracy of the recorded data. The initial settings process starts once the USB Charging clip is removed from the device. 19

*

To configure the date and time automatically, move to an outdoor location where there are no obstacles overhead and select Set by GPS. Configuration is complete after you have finished configuring all settings and the Time screen appears. Note If the device fails to acquire a GPS signal, press the ENTER button and configure manually, or move to another location and press the BACK button to start acquiring a GPS signal again. To edit settings or other information, press the BACK button to display the desired setting. The previous configuration has already been saved if you return to a setting. J-57 User Manual Setup Configuring the device directly A Set the display language Select LANGUAGE and then press the ENTER button. B Select the configuration method Press the UP orDOWN button > select Set by Watch > and then press the ENTER button. C Enter your initial settings Follow the on-screen instructions and enter your information for the initial settings. Initial settings include the following personal details. Height Weight Gender DOB Date and time (Year, Month, Day, AM/PM, Minutes, Seconds)*

20 J-57 User Manual Device screens Screen display Time screen 1 2 3 4 1:

2:

3:

4:

*

Current date and day Current time Total steps for the day and indicator of progress toward your target number of steps*

Icons that represent the status of battery level. Only when MEAS. ACTIVITY is set to ON. Settings screen Measurement screen Activity screen Setup 21 J-57 User Manual Battery Levels Setup The battery icon below the time display indicates the remaining charge in the battery. Charge the device as necessary in accordance with usage conditions. Estimated Continuous Workout Measuring Time Battery level indicator Operating time 10 to 6 hours 6 to 4 hours 4 to 2 hours 2 to 0 hours Estimated Continuous Time Display Duration

: ON : OFF

: Not supported Maximum operation time*2 30 days 2 days 4 days

(advanced)

(normal) Device usage state

(no workout measuring) Track Activity Heart rate monitoring Auto Sleep*1 Seconds Display Auto Search Bluetooth

*1 Auto Sleep is active for 14 hours per day (internal evaluation criteria).

*2 The operation time varies depending on the environment, which affects GPS reception, and device settings such as backlight settings. 22 J-57 User Manual Setup c Nothing will appear in the screen when the battery level is low.Long-term storage of the device while the internal battery is low could degrade battery performance. Make sure you charge the device at least once every six months even when it is not being used. 23 J-57 User Manual Setup Locking and unlocking the buttons Locking the buttons To lock the buttons, press and hold the UP button at the following screens. Time screen Activity screen Measuring screen Unlocking the buttons To unlock the buttons, press and hold the UP button. 24 J-57 User Manual Setup Turning the device on and off Turning on the device Press and hold the START/STOP button for 2 seconds to turn on and start the device. Turning off the device Turn off the device if it will be unused for an extended period of time. To turn off the device, press the ENTER button at the Time screen and then select MENU > Turn Off > Yes. U Turn Off on page 73 25 J-57 User Manual Device sensors Setup GPS signal reception (GPS positioning) GPS positioning GPS positioning is the process by which the device receives a GPS signal and timing information to measure routes, distance, pace, and other information. To ensure accuracy of measurements, use the device under the following conditions in areas of good GPS signal reception. Scenarios in which GPS positioning is used GPS measuring (Run or Walk measurements) Time synchronization (SETTINGSSet by GPS, SystemUpdate Time) Good signal reception conditions Locations where you cannot receive signals Locations that are difficult to receive signals Inside rooms or buildings, or underground In tunnels Under water On water Locations with electronic interference, such as constructions sites and heavy traffic Near high-voltage wires or television towers, overhead electric wires for trains, and roads with skyscrapers Using the device for the first time Before using the device for the first time after purchase, wait at least 15 minutes after initial GPS positioning outdoors with no obstructions overhead while the device displays the Measurement screen. This improves measurement accuracy. 26 J-57 User Manual Setup The Measurement screen appears after GPS locating. Wait 15 minutes Note Refer to the following page for more information on GPS positioning. U Measurement preparation (selecting the Activity Type) on page 33 This process normally only needs to be performed once. Perform this process if the device has not been used for several months. Note The basic configuration of the GPS system is 24 satellites orbiting the Earth at an altitude of 20,000 km with at least four satellites traveling in six different orbits. The GPS receiver acquires data from four satellites and calculates the latitude, longitude, altitude, and time. You can start measuring once the GPS positioning has been performed and this information has been received. You can receive more detailed GPS navigation data (satellite orbital information) if you wait 15 minutes after initial GPS signal acquisition, which improves measuring accuracy. However, note that GPS positioning is not 100% accurate or reliable at all times even with the more detailed GPS data because of atmospheric conditions and the usage environment. Note AGPS - Reducing the GPS Positioning Time You can reduce the GPS signal acquisition time by connecting the device with a smartphone and then retrieving GPS satellite information from a network server. Refer to the Epson View website for more information. https://view.epson.com/

27 J-57 User Manual Setup About the stride sensor This device is equipped with a stride sensor. This sensor enables the device to continue measuring your distance and pace in locations with poor GPS signal reception, such as in tunnels or indoors. Using the device for the first time When using the device for the first time, run or walk for the specified time depending on the location as described in the following table to allow the device to acclimate to your stride. Location Outside with no obstructions overhead Area with many buildings Time Approx. 10 minutes Approx. 30 minutes Note This process normally only needs to be performed once. However, note that information on your stride is initialized if the device is initialized. If this occurs, you need to perform the process to allow the stride sensor to acclimate to your stride again. When you mainly use the device for walking, set the activity type to Walk. U Measurement preparation (selecting the Activity Type) on page 33 Significant measurement errors may occur if your stride differs significantly from that used during the stride sensor initialization session. 28 J-57 User Manual Setup Measuring Pulse (Heart Rate) during Exercise You can measure your heart rate. Select On or Off. You can set five heart rate zones (within the range of the minimum and maximum heart rate) to suit the exercise intensity in User Settings. The value in brackets () is the default setting. Setting items Value Explanation HR Zone Zone1

(30 to 100 bpm) Zone2

(101 to 130 bpm) Zone3

(131 to 160 bpm) Zone4

(161 to 190 bpm) Zone5

(191 to 240 bpm) 29 J-57 User Manual Measuring Your Workout Measuring Your Workout U Measuring workouts on page 31 U Checking data during measuring on page 35 U Recording lap times during measuring on page 36 U Changing Measure Set (GPS measurement settings) on page 37 U Using A-GPS to reduce the GPS positioning time on page 45 U Configuring the operation of the backlight during measuring on page 45 U Configuring workout notifications on page 45 U Measuring time (Stopwatch) on page 47 U Estimating VO2max on page 48 30 J-57 User Manual Measuring Your Workout Measuring workouts This device uses positional and time information received from GPS satellites to measure your distance, pace, and routes. You can also measure split times and lap times during GPS measuring sessions. Split time Measures the elapsed time from the start. Press the START/STOP button to start measuring. Press the START/STOP button again to stop the measuring. Lap time Records the elapsed time for each lap. Press the ENTER button during a measurement to record your lap time. START/STOP START/STOP START/STOP ENTER ENTER ENTER START/STOP Note When using the AT Lap function, laps are recorded automatically each time the preconfigured distance is reached. U Recording laps automatically (AT Lap) on page 39 Measurable activities Workout Explanation Run Walk Jogging, running, marathons, etc. Walking Treadmill Using a treadmill indoors Measurable items Workout Split Time (Time) Distance (Dist.) Pace (Pace) Explanation Total time from the start of measurements Total distance from the start of measurements Current pace (time per kilometer/mile) Lap Time (LapTime) Average lap time 31 J-57 User Manual Measuring Your Workout Workout Explanation Lap Pace (LapPace) Average pace for each lap Calories Burnt (Calories) Calories burnt from the start of measurements Steps (Steps) Stride (Stride) Pitch (Pitch) Heart rate (HR) Total number of steps since the start of measurements Current stride Current number of steps per minute Current heart rate per minute Time (Time of Day) Current time Estimated end distance*2 Estimated end time*3 Estimated distance completed at the end of the configured time Estimated time at completion of the configured distance

*2 When Time is set under Training

*3 When Dist. is set under Training Measurement Screens Press the UP or DOWN buttons at the Measurement screen to change through the different displays. Press the ENTER button to display the Lap screen. 32 J-57 User Manual Measuring Your Workout Measurement preparation (selecting the Activity Type) At the Time screen, press the DOWN button to select the activity type. The following table lists the available activities. Activity Type Running (Run) Walking (Walk) Explanation Jogging, running, marathons, etc. Walking Treadmill (Treadmill) Jogging or running on a treadmill The device will begin GPS positioning once an activity is selected. The Measurement screen appears once the GPS positioning is complete. Note The device will display the Measurement screen without performing GPS positioning when Treadmill is selected. c Important Make sure the screen is facing up and you are outside with no obstructions overhead when performing GPS positioning. U GPS signal reception (GPS positioning) on page 26 If the device fails to acquire a GPS signal, the "Locating GPS Failed" message appears. Press the BACK button to try and acquire the GPS signal again. To continue your measurement without using GPS positioning, press the ENTER button. To start your measurement without waiting for the device to finish GPS positioning, press the START/STOP button at the screen that appears while the device acquires the GPS signal. The device will not be able to track your route while the device is still performing GPS positioning. The device will begin tracking your route as soon as it finishes GPS positioning. U Measurable items on page 31 33 J-57 User Manual Measuring Your Workout Starting measuring Stopping and saving measuring At the Measurement screen, press the START/STOP button to start the measuring. c Important The oldest data will be overwritten when the device runs out of storage space used for measurement data. We recommend that you use the Epson View companion application to upload data after each measuring. U Managing data with the companion application on page 55 The maximum measurement time for each split lap is 13 hours. If these times are exceeded, measuring is stopped. The maximum number of measuring sessions is 64. Pausing and resuming measuring You can pause the measuring by pressing the START/

STOP button during the measuring. You can then resume the measuring by pressing the START/STOP button again. Note The device will return to the Time screen after one hour of no operation before measuring is started or during paused measuring. The data for the paused measuring up to the point of the pause will be saved. A Display the Stop menu Press the ENTER button while the measuring is paused to display the Stop menu. B Save the data Press the UP orDOWN button > select Save >

and then press the ENTER button. The Measurement Results screen appears with the following information. Activity type and date Measurement time Distance Split time Average pace Average stride Calories burnt Steps Total number of laps Use the UP and DOWN buttons to change through the different displays./

Note Select Delete if you do not want to save the data. To resume the measuring, select Resume or press the START/STOP button. You can return to the Time screen by waiting 15 seconds or pressing the ENTER button. 34 J-57 User Manual Measuring Your Workout Checking data during measuring Three different screens are available during measuring. Press the UP and DOWN buttons to switch between these screens. The information that appears depends on the selected activity. 35 J-57 User Manual Measuring Your Workout Recording lap times during measuring Press the ENTER button during measuring to record a lap. The Display Lap screen appears for a few seconds when a lap is recorded. Note The Display Lap screen will also appear when you have reached the distance set for the AT Lap function. U Recording laps automatically (AT Lap) on page 39 36 J-57 User Manual Measuring Your Workout Changing Measure Set

(GPS measurement settings) Various user-configurable measurement settings are available. Configuring settings A Display the Workout menu Press the ENTER button at the Measurement screen. B Display the Settings screen Press the UP orDOWN button > select the desired setting > and then press the ENTER button. C Configure settings Press the UP orDOWN button > select the desired option > and then press the ENTER button. D Finish the configuration Once you have configured all desired settings, press the BACK button to display the Measurement screen. Note If you configured settings while measuring is paused, press the BACK button twice to display the paused measurement screen. You can also configure settings from a PC using Epson View. Refer to the following website for more information. U https://view.epson.com/

Note The available settings vary depending on the activity. U List of Measure Set on page 38 37 J-57 User Manual List of Measure Set Measuring Your Workout AT Lap This function automatically records laps each time a preconfigured distance is reached. U Recording laps automatically (AT Lap) on page 39 AT Pause (only for Run activity sessions) This function automatically pauses your measuring when you stop running and resumes your measuring when you start running again. U Pausing and resuming measuring automatically (AT Pause) on page 40 Training This function measures your performance in regards to preconfigured time and distance goals and also has a mode that helps you maintain a preconfigured pace. U Measuring preconfigured time and distances (Training) on page 41 Interval (only for Run activity sessions) Interval training is the repetition of sprints followed by periods of rest. You can set target times and distances to create a full workout. The device will vibrate to notify you when to switch between each sprint and rest period. U Setting time/distance training sessions with high/low intensity intervals(interval training) on page 44 Race (only for Run activity sessions) This feature allows you to set a target pace so that the device will vibrate to notify you when you have deviated from the target pace. U Setting and measuring paces (target pace) on page 43 38 J-57 User Manual Measuring Your Workout Recording laps automatically

(AT Lap) This function automatically records laps each time a preconfigured distance is reached. C Configure settings Press the UP or DOWN button > select Time or Dist. > and then press the ENTER button. Note To disable this function, select OFF. D Finish the configuration Once you have configured all desired settings, press the BACK button to display the Measurement screen. A Display the Workout menu Press the ENTER button at the Measurement screen. B Display the Settings screen Press the UP or DOWN button > select AT Lap

> and then press the ENTER button. Note If you configured settings while the measurement is paused, press the BACK button twice to display the paused measurement screen. 39 J-57 User Manual Measuring Your Workout Pausing and resuming measuring automatically (AT Pause) This function automatically pauses your measuring when you stop running and resumes your measuring when you start running again. C Configure settings Press the UP orDOWN button > select ON >

and then press the ENTER button. A Display the Workout menu Press the ENTER button at the Measurement screen. B Display the Settings screen Press the UP orDOWN button > select AT Pause > and then press the ENTER button. Note To disable this function, select OFF. D Finish the configuration Once you have configured all desired settings, press the BACK button to display the Measurement screen. Note If you configured settings while the measurement is paused, press the BACK button twice to display the paused measurement screen. 40 J-57 User Manual Measuring Your Workout Measuring preconfigured time and distances (Training) Training This function measures your performance in regards to preconfigured time and distance goals and also has a mode that helps you maintain a preconfigured pace. Time training You configure a training time to create a timed training session. During the session, you can check the running time and estimated end distance. U Measuring Preconfigured Time and Distances (Time/Dist.) on page 42 Distance training You configure a distance to create a distance training session. During the session, you can check the current distance and estimated arrival times. U Measuring Preconfigured Time and Distances (Time/Dist.) on page 42 Race training (only for Run activity sessions) This feature allows you to set a target pace so that the device will vibrate to notify you when you have deviated from the target pace. U Setting and measuring paces (target pace) on page 43 Interval training (only for Run activity sessions) Interval training is the repetition of sprints followed by periods of rest. You can set target times and distances to create a full workout. The device will vibrate to notify you when to switch between each sprint and rest period. U Brief description of interval training on page 44 41 J-57 User Manual Measuring Your Workout Measuring Preconfigured Time and Distances (Time/Dist.) A Display the Workout menu Press the ENTER button at the Measurement screen. B Display the Settings screen Press the UP orDOWN button > select Training > and then press the ENTER button. C Configure settings Press the UP orDOWN button > select Time or Dist. > and then press the ENTER button. Note To disable this function, select OFF. D Finish the configuration Once you have configured all desired settings, press the BACK button to display the Measurement screen. Note If you configured settings while the measurement is paused, press the BACK button twice to display the paused measurement screen. 42 J-57 User Manual Measuring Your Workout Setting and measuring paces

(target pace) This feature allows you to set a target pace (time per kilometer) so that the device will vibrate to notify you when you have deviated from the target pace. This feature is only available for Run activity sessions. Note The target pace can also be configured from a PC if you use the Epson View PC application. In this scenario, you can configure a different target pace for each lap/

interval. Refer to the "Application User's Guide" for more information. Configuring paces Measuring See the following page for information on measuring. U Measuring workouts on page 31 43 J-57 User Manual Measuring Your Workout Setting time/distance training sessions with high/low intensity intervals

(interval training) Brief description of interval training Interval training is the repetition of sprints (high intensity) followed by periods of rest (low intensity). You can set target times and distances to create a full workout. The device will vibrate and trigger a sound to notify you when to switch between each sprint and rest period./

Sprint: High-intensity training periods Rest: Low-intensity training periods Number of intervals: Number of intervals of the sprint and rest periods Setting conditions in your interval sessions Note Interval settings can also be configured from a PC if you use the PC application.Epson View You can freely configure the number of intervals when using the PC application. Refer to the "Application User's Guide" for more information. Setting interval conditions Measuring c Important Make sure the screen is facing up and you are outside with no obstructions overhead when performing GPS positioning. U GPS signal reception (GPS positioning) on page 26 It usually takes less than two minutes for the device to complete GPS positioning. Sprint

(Sprint) Rest

(Rest) First interval Second interval 44 J-57 User Manual Measuring Your Workout Using A-GPS to reduce the GPS positioning time You can reduce the GPS positioning time before your walking or running session by updating the GPS information in the device./

Connect the device to a PC or smartphone and start Epson View to automatically update the GPS information in the device. c Important Downloading GPS information may incur separate communication charges for which the user is responsible. You do not need to be outside to update the GPS information via Epson View. Configuring the operation of the backlight during measuring You can enable the backlight to remain on during the entire measurement. This is useful when using the device at night. U BACKLIGHT on page 72 Note Using the device with the backlight constantly on reduces the continuous GPS tracking time by approximately two hours. The backlight turns off momentarily while the device vibrates as lap or other notification. The backlight turns back on after the device stops vibrating. Configuring workout notifications The device can vibrate as notification such as when you complete laps or your target distance in Training mode. The device alerts users of the following notifications. Completion of laps in AT Lap mode Pausing and resuming of measuring in AT Pause mode Completion of target distance or target time in Training mode 45 J-57 User Manual Measuring Your Workout Deviation from the target pace range in Training mode U Vibration on page 72 46 J-57 User Manual Measuring Your Workout Check recorded laps. Measuring time

(Stopwatch) Use this feature to measure only time without using GPS measuring. Note Stopwatch data is not stored in the device. This function cannot measure distance, pace, or other GPS measuring activity. A Display the screen At the Time screen, press the DOWN button and then select Stopwatch. B Starting measuring Press the START/STOP button to start the stopwatch. Button functions START/STOP button: Starts and stops the stopwatch./

ENTER button:

Records the lap time. (During measuring) Resets the stopwatch. (When the measuring is paused) UP and /DOWN buttons when the measuring is paused:

47 J-57 User Manual Measuring Your Workout Estimating VO2max VO2max (maximum oxygen uptake) can be estimated by using the heart rate sensor and GPS measurement. You can check the estimated VO2max on Epson View. Refer to the following website for more information. U https://view.epson.com/

What is VO2max VO2max is the maximum amount of oxygen that a person can take per kilogram for one minute. Based on the estimated VO2max, your time of 5km race, 10km race, half marathon, or full marathon can be estimated. To estimate VO2max, running is required with the following conditions satisfied. You profile information (such as body height, weight, and gender) has been correctly entered. Select [Run] as the activity type (Estimation is not available with [Walk] or

[Treadmill] selected) start Complete GPS positioning outdoors, then run for at least 10 minutes immediately after starting measurement (Figure 1). Heart rate needs to be measured during running Heart rate needs to be measured during running Disable Auto Pause U AT Pause (only for Run activity sessions) on page 38 Run at 6 kilometers or more per hour, or 10 minutes or faster per kilometer Run so that heart rate is kept at exercise strength 55 to 90%HRR (*) Figure 1 10min

* Formula for exercise strength %HRR (how to get heart rate when exercise strength is 55%HRR): Heart rate

= 0.55 (Maximum heart rate - heart rate at rest) + heart rate at rest The maximum heart rate and heart rate at rest are automatically calculated according to the information entered at the initial setup. You can change them using Epson View. Refer to the following website for more information. U https://view.epson.com/

VO2max cannot be estimated under the following conditions. End the measurement, then restart measurement. Running is stopped before 10 minutes has passed after starting measurement. Running speed and heart rate that are needed for the estimation are not kept due to traffic light or walking. Running without measuring heart rate 48 J-57 User Manual Measuring Your Workout Note Running on a flat ground with no slope is recommended. The VO2max and race time estimation result may vary depending on the following factors. You physical condition and weather condition when running (temperature, humidity, wind, and etc.) Running course (course with slopes, trail run, and etc.) 49 J-57 User Manual Measuring Your Workout VO2max Standard (ml/kg/min) by Gender/Age Male Evaluation 29 years or younger 39 years or younger 49 years or younger 59 years or younger 69 years or younger 70 years or older Excellent Great Nice Normal Low Female 56.2 51.1 45.7 42.2 38.1 54.3 47.5 44.4 41.0 36.7 52.9 46.8 42.4 38.4 34.6 49.7 43.3 38.5 35.2 31.1 46.1 39.5 35.0 31.4 27.4 42.4 36.0 30.9 28.0 23.7 Evaluation 29 years or younger 39 years or younger 49 years or younger 59 years or younger 69 years or younger 70 years or older Excellent Great Nice Normal Low 50.2 44.0 39.5 35.5 31.6 46.9 41.0 36.7 33.8 29.9 45.2 38.9 35.1 31.6 28.0 39.9 35.2 31.4 28.7 25.5 36.9 32.3 29.1 26.6 23.7 36.7 30.2 26.6 23.8 21.2

* The above table is given here with permission of The Cooper Institute in the United States. http://www.cooperinstitute.org/

50 J-57 User Manual Checking Workout Measurement Data Checking Workout Measurement Data U Checking history data from previous measurement on page 52 U Deleting measurement data from the history on page 54 U Managing data with the companion application on page 55 51 J-57 User Manual Checking Workout Measurement Data Checking history data from previous measurement You can check measured data on the recall screen. 52 J-57 User Manual Checking Workout Measurement Data Measurement data that can be checked in recall The following measurement data can be checked. Icons Run activity Walk activity Treadmill activity Measurement data parameters

-

-

Date measured Start time/End time Distance Split time Average pace Average stride HR Heart rate Calories burnt Steps Total number of laps 53 J-57 User Manual Checking Workout Measurement Data Deleting measurement data from the history Two methods are available to delete measurement data from the history. Use the following procedure to delete measurement data from the history. To delete the entire history and all measurement data, initialize the device. Refer to the following page for more information. U Initializing the device on page 83 54 J-57 User Manual Checking Workout Measurement Data Managing data with the companion application EPSON View companion application:

With this application, you can review workout measurement data and activity data from your PC. With this application, you can review workout measurement data and activity data from your smartphone and PC. Visit the following website to download Epson View, create an account, and learn how to upload data and perform other operations. PC:

https://view.epson.com/

Smartphone:

Use the following QR code to access the web site. 55 J-57 User Manual Checking Workout Measurement Data Starting wireless communication This section describes the procedure to start wireless communication so that the device can be paired with a smartphone. Note To delete the smartphone pairing, display the Settings menu, select Smartphone and then Forget Device. The following screen appears once the pairing has been deleted. Select Pairing Completed to complete the operation. 56 J-57 User Manual Measuring Daily Activity (Meas. Activity) Measuring Daily Activity (Meas. Activity) U Track activity measurement function on page 58 U Enabling and Disabling Measuring Activity on page 59 U Checking your activity on page 60 U Configuring a target number of steps on page 61 U Checking your target number of steps progress on page 62 U Stop measuring your activity on page 63 57 J-57 User Manual Measuring Daily Activity (Meas. Activity) Track activity measurement function This device is equipped with functionality to measure different activities. The device can measure daily activity such as number of steps and calories burnt while the device is worn. Measured data is aggregated on a per-day basis and is viewable on the device or the companion application. Data on the number of steps derived from GPS measuring, distance, calories burnt, and sleep is included in the activity data. Using track activity measurement function effectively Configure a target number of steps per data so that you can check your progress on the device. U Configuring a target number of steps on page 61 U Checking your activity on page 60 58 J-57 User Manual Measuring Daily Activity (Meas. Activity) Enabling and Disabling Measuring Activity This is enabled (ON) by default. or Use then press to select a menu or option and to confirm the selection. A Display the menu B Select Meas. Activity. C Finish the configuration and hold it for Press repeatedly or press at least 2 seconds to return to the Time screen. Note When Track Activity is set to OFF, the track activity icon is removed from the bottom right of the time screen (to the right of the battery icon). 59 J-57 User Manual Measuring Daily Activity (Meas. Activity) Checking your activity Activity data you can check The following two types of data can be checked. Current activity data (Track Activity screen) Past seven days worth of activity data (Recall screen) Measurement item Steps Recovery time Mind balance Sleep measurement Calories Distance Heart rate Exercise

-

HR

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Checking current activity (Track Activity screen) At the Time screen, press the UP button to display the Track Activity screen. Press the UP orDOWN buttons to change through the different display parameters. Press the ENTER button at the Track Activity screen to display a graph of the past seven days worth of activity data. Press the BACK button to return to the Track Activity screen. At the Steps screen, press the DOWN button to return to the Time screen. Note Activity is measured on a per-day basis with a cutover time of midnight between each day. 60 J-57 User Manual Measuring Daily Activity (Meas. Activity) Configuring a target number of steps You can track your progress towards your daily target number of steps when Meas. Activity is set to ON. The default target number of steps is 10,000 steps/

day. Checking previous activity data

(Recall screen) c Important The device stores the past seven days worth of activity data. Older data is overwritten by the oldest data first. For this reason, we recommend that you upload data to the Epson View companion application on a timely basis. U Managing data with the companion application on page 55 Note Activity data cannot be deleted from the History. To delete the activity data, initialize the device. U Initializing the device on page 83 61 J-57 User Manual Measuring Daily Activity (Meas. Activity) Checking your target number of steps progress If you configure a target number of steps, the device displays a target number of steps progress indicator on the Time screen. 62 J-57 User Manual Measuring Daily Activity (Meas. Activity) Stop measuring your activity Note Note: When Track Activity is set to OFF, the Track Activity icon is removed from the bottom right of the Time screen (to the right of the battery icon). The device will no longer measure your number of steps, calories burnt, or distance. 63 J-57 User Manual Usage Examples for Some Typical Scenarios Usage Examples for Some Typical Scenarios U Measuring marathons and walking sessions on page 65 U Configuring training workouts for races on page 66 U Configuring racing goals on page 67 U Checking your daily condition (Activity) on page 68 64 J-57 User Manual Usage Examples for Some Typical Scenarios Measuring marathons and walking sessions 65 J-57 User Manual Usage Examples for Some Typical Scenarios Configuring training workouts for races 66 J-57 User Manual Usage Examples for Some Typical Scenarios Configuring racing goals 67 J-57 User Manual Usage Examples for Some Typical Scenarios Checking your daily condition (Activity) 68 J-57 User Manual Changing Device Settings Changing Device Settings U Changing device settings on page 70 U Settings on page 72 U Turn Off on page 73 69 J-57 User Manual Changing Device Settings Changing device settings This section describes the procedures to configure the device. Configuring the device from a smartphone You can configure this device using a smartphone. Download and refer to the Application User's Guide for more information. http://www.epson.jp/support/support_menu/ks/

121.htm Note A wireless connection must be established between the device and a smartphone to configure the device using a smartphone. U Starting wireless communication on page 56 Configuring the device from a PC A Connect the device to the PC Attach the USB Charging clip to the device and connect the USB plug into a USB port on the PC. B Configure settings Start the Epson View companion application on the PC and configure the initial settings. Follow the on-screen instructions and enter your information. C Synchronize the device After entering your initial settings, click Next to synchronize the device.

\\\The configuration is complete once the Time screen appears on the device. Remove the USB Charging clip from the device. Note Visit the following website for more information on using Epson View. U https://view.epson.com/

Configuring the Device Directly This section describes the procedure to configure Track Activity as an example. 70 J-57 User Manual Changing Device Settings Use or to confirm the selection. to select an option and then press A Display the menu B Configure settings C Finish the configuration Press repeatedly or press and hold it for at least 2 seconds to return to the Time screen. Configuring the Device from a Smartphone Use Epson View to configure the device. Refer to the following website for more information. U https://view.epson.com/

Note Bluetooth connection must be established between the device and smartphone to configure the device from the smartphone. U Starting wireless communication on page 56 Configuring the Device from a PC Use Epson View to configure the device. Refer to the following website for more information. U https://view.epson.com/

71 Changing Device Settings J-57 User Manual Settings Bluetooth ON/OFF This setting is used to enable and disable Bluetooth. Options: ON, OFF Pairing This is used to connect with a smartphone. Select the device to be connected and then operate the smartphone. Notifications These settings are used to enable and disable notifications such as smartphone reception of phone calls and email messages when the device is paired with a smartphone. Non-Workout This setting is used to enable and disable notifications at the Time screen. Options: ON, OFF Workout This setting is used to enable and disable notifications at the Measurement screen. Options: ON, OFF Forget Device This setting is used to delete the connection information for the smartphone. Select the desired device and then select Forget Device. Alert This setting is used to enable or disable vibration of the device as notification such as when you complete laps or your target distance in training mode. Activity Step Target This setting is used to enter a target number of steps. Options: 100 to 30,000 steps in 100-step increments. Meas. Activity This setting is used to enable and disable the track activity measurement function. Options: ON, OFF Vibration Alarm This setting is used to enable and disable alarms, and configure the alarm time. Options: ON (00:00 to 23:59), OFF Options: ON, OFF Display Contrast Set the contrast for the screen. Options: High, Normal, Low BACKLIGHT These settings are used to configure the conditions at which the backlight turns on. Movement of the wrist wearing the device (Wrist turn) Options: ON, OFF Pressing of any button (Button Push) Options: ON, OFF During measuring (Workout) Options: All Time, OFF 72 J-57 User Manual Changing Device Settings Triggering of a notification such as completion of a lap or target distance in Training mode

(Notifications) minutes elapses, we recommend that you select Cancel, move to a different location, and try again. Options: ON, OFF Manual:

When a specified time has passed, the light automatically turns off. The backlight remains on until the end of measuring when Workout is selected for All Time. Configure the time manually on the device directly. Options: Year, Month, Date, Hour and Minutes Note Using the device with the backlight constantly on reduces the continuous GPS tracking time by approximately two hours. The backlight turns off momentarily while the device vibrates as lap or other notification. The backlight turns back on after the device stops vibrating. AUTO SLEEP When you leave the device for a while, this function automatically puts the device into sleep status. Options: ON, OFF System Language Set the display language. Options: English, Clock Set UPDATE TIME This setting is used to configure the current time. Options: Set by GPS, Manual Set by GPS:

Time Format Set the format for the display time. Options: 12 Hour, 24 Hour Display Seconds This setting is used to enable and disable the display of seconds. Options: ON, OFF Auto Search When this setting is enabled, the device will periodically perform GPS positioning whenever a measurement is in progress to reduce the initial GPS signal acquisition time before starting your next measurement. Options: ON, OFF RESET Initializing the device resets all settings to their defaults (Profile/Settings), resets the stride sensor, and deletes all measurement and activity data (History). Options: Yes, No U Initializing the device on page 83 VER.INFO Displays the firmware version information. The time is set in accordance with GPS positioning. This process will take a few minutes. Turn Off GPS signals cannot be received while indoors. Make sure the screen is facing up and you are outside with no obstructions overhead. If the device fails to complete GPS positioning after two This is used to turn off the device. To turn the device on again, press and hold the START/STOP for 2 seconds. 73 J-57 User Manual Changing Device Settings Certification This displays the device certifications. 74 J-57 User Manual Regular Maintenance Regular Maintenance U Cleaning the device on page 76 U Waterproof performance on page 77 U Batteries on page 77 U Disposing of the device on page 77 U Problem solving on page 78 U Updating the firmware on page 81 U Restarting Device on page 82 U Initializing the device on page 83 75 J-57 User Manual Regular Maintenance Cleaning the device Main device and band Periodically cleaning with water Clean the main device with water after each use or periodically. Wipe completely dry with a dry cloth after washing. The band can be washed with a diluted mild detergent. c Important Do not press any buttons or scrub the glass too strongly while cleaning the device. Doing so may cause malfunction or scratching of the glass. Do not press any buttons while the device is underwater. Doing so may result in failure. This strap is made from polyurethane and after years of use the color may fade or it may lose its elasticity. Cleaning contact points If you experience problems charging the device or using the connection, use a damp cotton swab to clean the contact points on the device and USB Charging clip. c Important Do not attach the USB Charging clip to the device while contact points are wet or dirty. Doing so may cause corrosion or malfunction of the contact points, or communication failures. Do not clean using organic solvents such as benzine, thinner, alcohol, or detergent. This could cause the product to degrade. 76 J-57 User Manual Regular Maintenance Waterproof performance Batteries Internal rechargeable device battery You cannot replace the built-in rechargeable battery yourself. If the battery does not retain its charge for as long as it used to due to prolonged use, the battery has likely reached the end of its service life. In this situation, contact your local reseller or our repair center to replace the battery for a fee. The average service life of the battery is four years. This varies depending on usage conditions. Disposing of the device When disposing of this device, follow your local laws and regulations. 77 J-57 User Manual Regular Maintenance Problem solving Check each item. Problem Basic actions The screen is not displayed. The device does not react even after performing an operation. Solution You cannot start using the device immediately after purchase until the device is charged. Try charging the device first. Also, nothing is displayed if the battery runs out. Make sure you charge the battery before use. U Charging the device on page 16 Is the battery running low? Charge the battery. U Battery Levels on page 22 If the device does not operate after charging, try resetting the system. U Restarting Device on page 82 The screen turns off or turns blue during use. Perform a system reset. U Restarting Device on page 82 The clock turns off. When you leave the device for a while, it enters sleep status and the time display turns off. This is not a malfunction as the display is restored the next time a button is pressed or you move the device. If the display is not restored, the battery is running low. Charge the device. U Charging the device on page 16 Note that the clock does not turn off if AUTO SLEEP is disabled. U AUTO SLEEP on page 73 The time is not set correctly. Set "Time Adjust" from Sys. Settings. U UPDATE TIME on page 73 If the hour is different, check the time zone and daylight-saving time. U Clock Set on page 73 Measurement stops while exercising. When exercising slowly, such as when walking, we recommend turning off the AT Pause function. U Pausing and resuming measuring automatically (AT Pause) on page 40 78 J-57 User Manual Problem GPS Regular Maintenance Solution GPS signal reception is weak or failing. Perform GPS positioning again with the device outside with no obstructions overhead for 15 minutes. U GPS signal reception (GPS positioning) on page 26 Go to a location outside with no obstructions overhead. GPS signals cannot be received while indoors. Obstacles partially blocking the sky, such as tall buildings and mountain sides, can also interrupt signal reception, which results in reduced distance accuracy. Even when a signal is being received, it may be interrupted depending on the running environment. Wear the device on the outside of your arm. Also, make sure the strap is tightened. GPS signal reception is weak or interrupted. Charging The device does not charge after attaching the USB Charging clip. Check the USB Charging clip connection. Clean the contact points of the device and USB Charging clip. The charge error screen is displayed. The main device and USB Charging clip become hot during the charging process. Water resistance Can I use the device when swimming?

The inside of the glass becomes cloudy. Communication The device is not recognized by the PC when connected. U Main device and band on page 76 The charge screen may not appear for 1 to 2 minutes after attaching the USB Charging clip when the battery is completely exhausted. This is not a malfunction. A malfunction may have occurred if you cannot charge the device even after checking the points above. If this happens, immediately stop trying to charge the device and send the main device and USB Charging clip to our repair center. Charge in environments with ambient temperatures of 5 to 35C. There may be a malfunction. Stop charging the device immediately and contact our repair center. This device is water resistant up to 5 bars of pressure and can be used while swimming. However, do not press any buttons while the device is underwater. The device cannot receive GPS signals while underwater. Condensation may occur in the device due to differences in temperature between the device and the open air. Temporary condensation does not have any effect on the device. You may continue using the device in this situation. If the condensation remains for a long time, water may have entered the device. Send the device to our repair center. Check the connection between the PC (USB port) and USB Charging clip (USB plug). Clean the contact points of the device and USB Charging clip. U Main device and band on page 76 Perform a system reset. U Restarting Device on page 82 79 J-57 User Manual Problem Web application Regular Maintenance Solution An error screen appears and communication is interrupted during data exchanges with the PC. Do not move the device and USB Charging clip during communication processes. Avoid communicating data under environments where static electricity can be easily generated. If an error occurs, try reconnecting the USB Charging clip and attempting the communication again. If you are still having communication errors after performing this troubleshooting, contact our service center. 80 J-57 User Manual Regular Maintenance Note Check the following if the ProSense firmware update tool does not start. An instance of the ProSense firmware update tool is already started preventing the starting of another instance. The USB Charging clip attached to the device is correctly connected to the PC. Refer to the download page on the Epson website for more information on firmware update procedures. Updating the firmware You may be able to resolve problems that occur by updating the firmware. Download and use the latest version. c Important The device and all settings/history data are initialized when the firmware is updated. Refer to the following page of the Epson website for more information on updates. http://www.epson.jp/dl_soft/category/121.htm Before updating the firmware, upload your measurement data to the Epson View companion application. U Managing data with the companion application on page 55 Checking the firmware version Updating the firmware A The latest firmware version is available for download from the following URL. http://www.epson.jp/dl_soft/category/

121.htm Select your device model and follow the on-screen instructions to download the firmware. B Attach the USB Charging clip to the device and then connect the cable directly to a USB port on the PC. C Execute the downloaded file. The ProSense firmware update tool starts. Follow the on-screen instructions to update the firmware. 81 J-57 User Manual Regular Maintenance Restarting Device Restart the device if operation becomes unstable. Press the four buttons;

,

, and simultaneously. The screen is reset and the device restarts. The following shows the differences between a restart and reset.

*: Data and settings are retained.

-: Data and settings are not retained. (Settings must be reconfigured.) Data/Settings Restart Reset Workout measuring settings History data System settings Profile settings Today's Activity Data Step Target settings User stride data VO2max Estimate Pairing Time information

*

*

*

*

-

*

*

*

*

*

-

-

-

-

-

-

-

-

-

-

c Measurement data is not recorded if a system reset is performed while measuring. 82 J-57 User Manual Regular Maintenance Initializing the device E Initializing the device Press the UP orDOWN button > select Yes >

and then press the ENTER button. Once the initialization is complete, the device will restart and display the Initial Settings screen. Initialize the device. U Configuring initial settings on page 19 Refer to the following page for more information on initialization. U Restarting Device on page 82 If you want to delete all measurement data and clear the device's memory, you need to initialize the device. A Display the menu At the Time screen, press the ENTER button. B Select Settings Press the UP orDOWN button > select Settings

> and then press the ENTER button. C Select System Press the UP orDOWN button > select System

> and then press the ENTER button. D Select Reset Press the UP orDOWN button > select Reset >

and then press the ENTER button. 83 Appendix J-57 User Manual Appendix U Product specifications on page 85 U Understanding the icons on page 87 U Glossary on page 88 U Trademarks on page 90 84 J-57 User Manual Appendix Product specifications Device Model No. Size (thickness) Weight Waterproofing performance Maximum usage time Operating temperature Maximum measurement time Maximum number of daily activity records Maximum number of records Number of lap records Heart rate measurement Pitch/Stride measurement J-57B/K/T 15.8mm Approx. 41 g Water resistant at 5 barometric pressures Up to 30 days*1,5 Up to 2 days*2,5 Up to 4 days*3,5 Up to 10 days*4,6

-5 to 50C Approx. 10 hours Current day plus past 6 days 64 Maximum of 200 per split Total maximum of 512 Display range Distance/Lap Distance Pace/Lap Pace/Average Pace 0.000 to 999.99 km/0.000 to 999.99 mi 0'01'' to 30'00''/km, 0'01'' to 45'00''/mi Split/Lap time Pitch/Average Pitch Stride/Average stride Steps Calories Burnt HR Estimated end time Estimated end distance 0:00'00" to 13:00'00"

0 to 255spm 0 to 255cm / 0 to 100inch 0 to 999999stp 0 to 9999kcal 30 to 240bpm 0:00'00" to 23:59'59"

0.000 to 999.99km/0.000 to 999.99mi

*1 Clock display (Track Activity disabled, Auto Sleep enabled, Auto Search disabled, and Bluetooth disabled) 85 J-57 User Manual Appendix

*2 When activity meter is operating (with heart rate measurement enabled (advanced), Auto Sleep enabled, Seconds display disabled, Auto Search disabled, and Bluetooth enabled)

*3 When activity meter is operating (with heart rate measurement enabled (normal), Auto Sleep enabled, Seconds display disabled, Auto Search disabled, and Bluetooth enabled)

*4 GPS enabled (with heart rate measurement enabled)

*5 The device periodically receives a GPS signal to reduce the initial GPS positioning time. Auto Sleep is active for 14 hours/day (internal evaluation criteria)

*6 Operating time varies depending on GPS signal reception quality and device settings. The operating time will become shorter especially in doors where GPS signal reception quality is bad. (with setting to turn on the light) Option specifications You can purchase the following optional extras. Contact your local reseller for more information. USB charging clip Operating temperature range AC adapter specifications Input Output 5 to 35C 100 VAC 50/60 Hz 5 VDC / 1.0 A 86 J-57 User Manual Appendix Understanding the icons Icons Name Run mode (measuring while running) Walking mode (measuring while walking) Treadmill mode (measuring treadmill workout sessions) Device is acquiring a GPS signal (GPS On) GPS positioning Average pace Lap Distance Calories burnt Stopwatch Split time AT Lap Manual Lap Steps Average stride Charging USB communication in progress Buttons are locked Buttons are unlocked 87 Appendix Term GPS function J-57 User Manual Glossary Definition A system that is used to calculate current positions via a GPS receiver that receives signals from satellites orbiting the earth. This function allows you to accurately understand positional and time information. U GPS signal reception (GPS positioning) on page 26 Distance from the measurement start point to the current time. Distance Target time per km Target Pace The device is water resistant up to 5 bars of pressure. The display automatically turns off after a certain time of no user operation. The total time from starting to stopping the workout. This companion application allows you to use a smartphone or PC browser to review session and measurement data from your device. Water resistant up to 5 bars of pressure Auto Sleep Split time Epson View This function automatically pauses your measuring when you stop running and resumes your measuring when you start running again. AT Pause This function automatically records laps once a certain distance has been reached. AT Lap This function measures various daily activity including number of steps, distance, and calories burnt. Track Activity This function turns on the light automatically when transitioning to different screens. AT Light Stride sensor This sensor uses stride and acceleration data accumulated when GPS is in use so that the device can estimate distance traveled when you are in locations of poor GPS signal reception, such as tunnels. U About the stride sensor on page 28 88 J-57 User Manual Appendix Definition Your current pace acquired from GPS information. Your pace for the current lap. Your time for the lap. Term Pace Lap pace Lap time 89 J-57 User Manual Trademarks Appendix EPSON and EXCEED YOUR VISION are registered trademarks of the Seiko Epson Corporation. Microsoft and Windows are registered trademarks of the Microsoft Corporation in the United States of America and other countries. OS X and macOS are registered trademarks of Apple Inc. in the United States of America and other countries. iPhone is a trademark of Apple Inc. Android and Google Play are trademarks of Google Inc. The Bluetooth word mark and logos are registered trademarks of Bluetooth SIG, Inc. Seiko Epson Corporation uses these trademarks under the terms of license. QR Code is a registered trademark of DENSO WAVE INCORPORATED. Other product names are the trademarks or registered trademarks of their respective companies. 90 GPS Sports Monitor J-57 http://www.epson.jp/support/support_menu/ks/121.htm XXXXXXXXX2017 Seiko Epson Corporation. All rights reserved.

J-57 Correction of error in Manual we will correct the following part.

Certification (p.74) Before correction After correction

Certification information GPS Sports Monitor ModelJ-50 -57 FCC IDBKMAP0010 FCC /IC Notices CAN ICES-3B/NMB-3B IC1052F-AP0010 This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter. This device complies with Part 15 of FCC Rules and Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must acceptany interference, including interference that may cause undesired operation of this device. Le prsent appareil est conforme aux la partie 15 des rgles de la FCC et CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. Caution:

Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment.

**Explanation that an SAR examination is unnecessary with Portable equipment**

This equipment complies with FCC/IC radiation exposure limits set forth for an uncontrolled environment and meets the FCC radio frequency (RF) Exposure Guidelines and RSS-102 of the IC radio frequency (RF) Exposure rules. This equipment has very low levels of RF energy that are deemed to comply without testing of specific absorption ratio

(SAR). Cet quipement est conforme aux limites dexposition aux rayonnements nonces pour un environnement non contrl et respecte les rgles les radiolectriques (RF) de la FCC lignes directrices d'exposition et dexposition aux frquences radiolectriques (RF) CNR-102 de lIC. Cet quipement met une nergie RF trs faible qui est considre conforme sans valuation du dbit dabsorption spcifique (DAS).

**Explanation of the EMC demand part of the United States. **

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However,there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Epson America , Inc. 3840 Kilroy Airport Way Long Beach, CA 90806 U.S.A Tel562-290-5254

Confirm safety standard certification information Displays the certification standard acquired by this product. A Display menu Configuration History Profile certification A menu will be displayed B Display certification information Configuration History Profile CCCCertification ertification ertification ertification Canada IC:1052F-AP010 U.S. FCC ID:BKMAP010 Select [Certification]

Certification information can be displayed C End display of certification information Press repeatedly or press and hold for more than 2 seconds to return to the clock screen