FCC ID: 2A7JZ-002 Sound amplifier

User Manual FC-BLE-RIC Version: 102022 Please read this user manual thoroughly and completely before using the product. Please download and install HA-Fit APP rst. CONTENTS I. IMPORTANT SAFETY INSTRUCTIONS

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. HOW TO USE YOUR DEVICE 1.HOW TO USE HEARING AID

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. 6 2.QUICK GUIDE

. 6 3.HA-Fit APP

. 10 4.BLUETOOTH CONNECTION

. 13 5.CHARGING

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. REPLACEMENT ACCESSORIES

. 18 1. Change earbuds

. 18 2. Wax guard Replacement Guide

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. MAINTENANCE AND CLEANING

. 20 1.Daily maintenance

. 20 2.Care and maintenance

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3.Cleaning

. 21 V. HEARING AIDS CARE

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. TROUBLESHOOTING GUIDE

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.TECHNICAL SPECIFICATION

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. DO NOT USE IF ANY OF THE FOLLOWING APPLY TO YOU:

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. MATTERS NEEDING ATTENTION, WARNING AND TIPS

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. FCCWARNINGSTATEMENT

. 28 I. IMPORTANT SAFETY INSTRUCTIONS Read all the information in this instruction manual and any other literature included in the box before using the device. 1. CONTRAINDICATION The device should not be used in the following situations:

- Patients with chronic suppurative otitis media (CSOM),congenital ear atresia, or any type of ear discharge 2. WARNINGS Warning

- Keep small parts (hearing instrument, ear domes, battery or other detachable parts) that can be swallowed out of children's reach. Dropping, immersing in liquid, exposure to strong electromagnetic elds or excessive heat will damage the hearing aids. Remove devices prior to any type of X-ray, MRI, or CT scan. If parts become stuck in the ear canal, seek medical assistance - do not attempt to remove by yourself. 2. Notice Warning

- Do not use at high volume for extended periods of time-ear injury can result.

- If you experience any pain or strong discomfort using the devices, remove and consult a doctor.

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- Do not store your devices in a hot/humid locations. You should never leave your hearing aids near heating appllances or in direct sunlight.

- Do not leave your hearing aids in the car as InsiIde temperatures can reach dangerous levels which could damage the devices.

- Routine maintenance to keep the device clean is required. Ensure that ear domes are free of debris and moisture at all times.

- Avoid shocks or dropping the product.

- Do not store or use the product in environments of high humidity or temperature (such as sauna room), to avoid damage.

- Batteries should be properly recycled and not disposed in the trash.

- Keep the devices away from small children. Injury or damage may result.

- Do not set volume levels too high. Listening with high-output devices for extended periods at high volume levels can cause further hearing damage.

- Do not share your hearing aids with others. Using a hearing aid congured for someone else can result in hearing damage or injury.

- Monitor for any unusual skin reaction. If you notice any allergic reaction (itchiness, swelling, or rash), stop wearing the hearing aids and consult a medical specialist.

- Do not touch the hearing aids to any type magnet or magnetized object. Your hearing aids are delicate electronic instruments and may be damaged by contact with strong magnetic elds.

- Do not attempt to open or repair the devices yourself. Damage can result and will void the warranty.

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. HOW TO USE YOUR DEVICE 1.HOW TO USE HEARING AID 1 2 4 5 2.2 Volume Adjustment Click the hearing aid button once: increase the volume one level. There are 10 volume levels, and when you hear two beeps, this is the highest volume level. 7 Memory functionRestart the hearing aid and it will automatically restore to the volume level and the scene mode set last time. 3 6 1. Front-end microphone 2. Back-end microphone 3. multi-function button 4. Sound tube 5. Earplugs 6. Receiver 7. Charging contact point 2.QUICK GUIDE 2.1 ON/OFF Long press for about 3 seconds to turn on. Long press for about 6 seconds to turn o the power. The hearing aids enter into hearing aid mode automatically after being turned on. 2.3 Hearing Mode Change You can cycle through the 3 Hearing Mode by : long press button Hearing Mode Sound you will hear when activated Hearing Mode Change 1 2 3 1 beep ("beep") General Hearing Mode 2 beeps ("beep beep") Noise Reduction Hearing Mode 3 beeps ("beep beep beep") Outdoor Hearing Mode

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2.4 How To Wear It Step 1:

Choose a suitable size ear dome, install in receiver tail. Step 2:

Gently insert the earplug into the ear canal. R Step 3:

Place the hearing aid behind the ear. The curve of the sound tube should t comfortably on top of your ear. Step 4:

If the earplug isn't suitable, there will be gaps, which will cause whistling. Please again choose the suitable earplugs that t your ear canal. R R 3.HA-Fit APP R Please download and install HA-Fit APP rst.

3.1 HA-Fit app connects to hearing aids Step 1:

Please turn on the hearing aid. Step 2:

Be sure Bluetooth is enabied on your phone. Step 3:

Open the HA-Fit APP. Step 4:

Click the Searching for Devices button.

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After "searching for devices", the HA-Fit APP will automatically connect to the hearing aid, and the successful connection status is shown in the gure.Connected FC-BLE-RIC... The devices are controlled by your personal voice. The devices are controlled by your personal voice. Step 4:

Step 5:

Follow all prompt steps to complete your personal hearing evalution. After completing your hearing evalution, click the Auto-

Optimize button and your hearing aids will be optimized based on your hearing score. The devices are controlled by your personal voice. Home Hearing evaluation is not a professional test. lt just a quick and convenient way to set the hearing device according to yout individual hearing situation. Disconnected Disconnected Left FC-BLR-RIC Right FC-BLE-RIC Searching for Devices Searching for Devices Sound Control Hearing Evalution Sound Control Hearing Evalution Left FC-BLE-RIC Right FC-BLE-RIC Searching for Devices Sound Control Hearing Evalution Please do the evaluation in a quiet place. Here is not very quiet, but it is ok. Start from your left ear, and then change to right ear to do the evaluation of 10 frequency band. When you hear the sound of signal, please click heard' other wise please click 'unheard' . Start 3.2 Hearing Evalution With the Hearing Hearing Evalution module, you can quickly set up your hearing aids according to your hearing characteristics. 3.2 Sound Control Step 1:

Please put on your hearing aids and turn them on. Step 2:

Please do the evalution in a quiet place. Step 3:

Click the Hearing Evalution button. The HA-Fit app is designed to allow you to conveniently control your hearing aids remotely from your Android or Apple device at hand. HA-Fit app covers key features like changing programs Step 1:

Step 1: Click the Sound Control button.

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Step 2:

Enter the sound control interface, you can easily control 4.BLUETOOTH CONNECTION the hearing aids, you can adjust various parameters, volume, program, frequency band, noise reduction... The devices are controlled by your personal voice. Left FC-BLE-RIC Right FC-BLE-RIC Searching for Devices Sound Control Hearing Evalution Home Volume/Mode Frequency Band Others Volume Down Volume Up Mode Change MPO Down MPO Up Left Both Right Volume state Start-up level Hearing mode beep sound

(For single beep represent mode 1,For dual beeps represent mode 2 and etc) Minimum /

maximum volume Sound you will hear when activated Beep 2 beep (beep beep) Volume up / down Short press " +"or "-"button Beep 4.1 To connect via Bluetooth (rst time pairing):

Remove BOTH Left and Right devices (both must be charged)-

from the Charging Base. Please put on your hearing aids and turn them on. Be sure Bluetooth is enabied on your phone. Go to the Bluetooth setting on your phone and select "Pair New Device" (wording on your particular phone may be slightly varied) Search for the Bluetooth identier of your device ("FC-BLE...")and select it to pair (connect)- this may take up to 2 minutes.

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Be sure to Accept any promots aiven reaardina connecting the device to your phone. There will be a promptconnected, when they connect successfully. Note: the apove paimg onmy neeas o De done one time with your phone. After that, as Iong as your pnone is nearby and Bluetooth is enabled, the hearing aid will automatically reconnect when turn on. Bluetooth DEVICE FC-BLE-RIC Note: If the bluetooth on your device is not connected to the phone for a long time, it will automatically turn o. Please restart your hearing aid and re-pair with your phone. Please keep the distance of your phone and hearing aids within 10 meters when they are connected.Beyond this distance, the sound quality may deteriorate and the connection may be lost. 4.2 Bluetooth Mode Button Operation Single click: Play/Pause the song;

Answer a phone call;End the call;

Quick double clickL: Skip forward to next song Quick double clickR: Skip forward to previous song Note: Bluetooth/Hearing aid functionality switching is automatic. The devices will switch to Bluetooth mode automatically when you are on a phone call or listening to music or watching a video. lf you pauselstop the music or end a call, the devices will autom-

atically enter into hearing aid functionality When disconnected from the phone (Bluetooth OFF), the device will automatically enter into hearing aid functionality.

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4.3 Bluetooth Disconnect:

5.2 How to charge There are 2 ways to disconnect Bluetooth 1) Turn OFF the hearing aid. Long press the button on the devices for 3 seconds(You will hear

"Power O" in your hearing aid) 3) Turn OFF Bluetooth on your phone. This will immediately disconnect your hearing aids from the phone. (You will hear

"Disconnected" in your hearing aid) In this case, to reconnect, simply turnBluetooth back on in the phone 5.CHARGING 5.1 CHARGING BASE 1. Hearing aid charging indicator 1 1 3 4 2. Charging base charging indicator 3. Left charging inner slot 4. Right charging inner slot 1) The charging box has a power storage function, andthe hearing aid can be charged after being inserted; When the charging box is out of power, a charger needs to be connected to charge the charging box and the hearing aid. 2) Put the hearing aid in the charging cradle to start charging automatically. Charging Time Rated Working Time Hearing Aid Charging Box 2h 18h 2h 4Times for Single Unit 2 Times for Two Units

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2 Note:

When the hearing aid battery power is low , the low battery warning signal will sound once every 1 minute until the battery power is exhausted. Therefore, please charge your hearing aid when you hear the buzzer. When the hearing aid and base is not functioning properly, please check the "troubleshooting table. If none of the solutions work, please contact our after-sales service team. REPLACEMENT ACCESSORIES 1. Change earbuds If the earplugs cannot t your ear canal, there will be beep. So please choose the suitable earplugs that t your ear cannal. R R Charging box battery indicator The hearing aid is charging Hearing aid is fully charged White light Lights o Charging box battery indicator 100%

75%

50%

25%

When the charge of the charging case is at 25%, please fully charge the charging case in time. 1) Turn the edge parts over. Hold the base part and pull it o. 2) Hold the receiver with your hand.

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R R R R 3) Insert the earplug straight and insert it gently.. 4) And then try to pull the earplug lightly 3) Pull out the old wax guard lter. 4) Insert the new wax guard lter net to make sure that it will not come o. into the sound hole of the hearing aid. 2. Wax guard Replacement Guide The wax guard lter net is located in the sound hole of the hearing aid which can eectively prevent the cerumen from entering into the hearing aid to cause damge to the hearing aid. Replace the earwax lter every 3 months.Do not reuse the used lter. R 5) Pull out the wax guard lter straight out to accomplish the replacement. Discard the old wax guard lter . R R 1) Remove the earplug rst. Refer to "Change earbuds". 2) Align the removed end of the wax guard lter with the sound hole of the hearing aid and insert.

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. MAINTENANCE AND CLEANING 1.Daily maintenance It is important to keep your devices clean and dry. On a daily basis, wipe

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them clean using a soft cloth or tissue. To avoid potential damage from excess humidity or perspiration,the use of a drying kit is also recommended. TROUBLESHOOTING GUIDE 2.Care and maintenance When not in use, store in a secure area away from small children and pets. Do not place hearing aids or charging base near high-temperature areas such as stoves or direct sunlight. Do not leave the devices in a humid place for a long time,such as bathroom. Take care not to poke the microphone holes with any sharp objects to avoid damage. Do not disassemble or attempt any repairs by yourself. Doing sowill void your warranty. 3.Cleaning 1) Cleaning the ear tips Remove any earwax buildup using the enclosed tool. Wipe clean with a tissue or soft cloth. 2) Cleaning Tool Use a soft cloth or tissue to wipe any moisture, perspiration, or debris from the surface of the tool. Note: Do not use alcohol or other cleaning solvents to clean the hook as this could damage the protective covering. SYMPTOM POSSIBLE CAUSES SOLUTIONS No Sound Volume too low Device is not charged Microphones are clogged Ear Domes clogged Low battery Voices are low, very weak, or unclear Ear Domes are too loose Earwax in ear dome Hearing has changed Hearing aid cannot connect to your phone, or take a long time to connect Bluetooth connection lncrease volume if volume control available Place charging the hearing aid until the in dicator is lighted in blue color. Clean out any debris from the mic holes Clean out any debris from the ear domes Place the aids into the charging base to charge Choose a suitable size ear dome, wear it correctly. Clean out any debris from the ear domes and receiver area with the cleaning brush Contact your physician to report any sudden drop in hearing 1) Make sure that your headphones are not connected to other devices, and that your device is not connected to other Bluetooth devices.

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Your hearing aid are connected to other phone Bluetooth connection is not stable and causes some interruptions Incorrect orientation Hearing aids whistling in the charger Charger battery depleted Poor contact between hearing aid and charging base Hearing aid reverse After the hearing aid is connected, the hearing aid indicator is not lit 2) Long press the button on the devices for 3 seconds to turn them o. Turn it on again. Turn o Bluetooth on other phone. It will immediately disconnect your hearing aid from the phone.To reconnect yourphone again. Try shortening the distance between your hearing aid and device. Avoid solid barriers in between. Ensure the USB cable is connected to the Charging base plugged into power. The base power status lights will blue to indicate charging. Reposition your hearing aids in their slots, ensuring the contact points are touching the charge points in the base. Reinsert the hearing aid into the charging base Check to see if the hearing aid is reversed Hearing aid failure self-checking table

[Fault self-check]

project Possible Causes Solution Hearing aid has no sound The button time is too short to start Long press the button for 3 seconds, restart Battery fully discharged ILow battery Volume is set too low Ear Domes are too loose Connect the hearing aid to the charging base for charging Connect the hearing aid to the charging base for charging Increase volume if volume control available Hearing aid not inserted correctly into earwear it correctly Indication for low battery Charge hearing aid Hearing aid not inserted correctly into charger Insert hearing aid correctly into charger Charger not connected to power source Connect charger to external power supply Battery fully discharged Wait three hours after placing hearing aid in charger, regardless of LED behavior The voice is very weak and unclear Hearing aid plays notication sound Indicator light on hearing aid does not light up when hearing aid placed in charging inserts

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Charging base fault self-checking table Noise Level 32dB Possible Causes Solution Frequency Range F1200Hz F24000Hz

[Fault self-check]

project After the hearing aid is connected, the hearing aid charging indicator is not lit Hearing aid indicator lights are dark or dim Charging does not start Poor contact between hearing aid and charging base Hearing aid reverse Reinsert the hearing aid into the charging base Check to see if the hearing aid is reversed Dirty charging contacts Clean the contacts of the hearing aid and the charger Hearing aid not inserted correctly into charger Insert hearing aid correctly into charger

.TECHNICAL SPECIFICATION Max.OSPL90 HF Avg.OSPL90 Max gain HFA Gain 120dB 1094dB 48dB 335dB Battery Current Total Distort NA 3%

. DO NOT USE IF ANY OF THE FOLLOWING APPLY TO YOU:

1) Congenital atresia of external ear or deformity of any part of the ear canal 2) Deafness is unstable, and the degree of hearing loss often uctuates 3) Persistent headaches, dizziness, earaches, tinnitus or other symptoms that are not suitable for adaptation 4) Sudden onset of hearing loss within the past 3 months; rapid progressive deafness; unilateral hearing loss or other acute ear disease;

5) Eusion (secretions/discharge) in the ear and/or frequent purulence (pus)

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6) Central deafness (central nervous system) or non-organic deafness 7) Patients with acute otitis externa and tympanitis 8) Patients with acute and chronic suppurative otitis media (in the period of purulent infection) 9) Patients who are allergic to the materials of this product

. MATTERS NEEDING ATTENTION, WARNING AND TIPS 1. Do not immerse the hearing aid in any liquid. Remove the hearing aid before swimming or bathing. After swimming or washing, wait for the ear canal to dry before wearing the hearing aid. 2. After removing the hearing aid at night, it should be placed in a case with a desiccant if possible, protected from light, high temperature and high humidity environment. 3. The external surfaces of the hearing aid should be kept clean, and earwax in the ear domes should be cleaned out daily 4. When you do not use hearing aids, please charge the product regularly to avoid battery damage; the recommended charging time interval of hearing aids is 28 days

. FCC Statement 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 interfer-

ence 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 o 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 dierent from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modications not expressly approved by the party responsi-

ble for compliance could void the user's authority to operate the equipment FCC ID:2A7JZ-002

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Label Sound amplifier Product model discovery CR430S B+

Input voltage Input Current 30mA Input power 5v 0.15W 2A7JZ-002 FCC ID ManufacturerXiamen Wenatone Medical Technology Co., Ltd. Address:805A, Jianye building,Torch hi-Tech (Xiang An) industrial park, Xiamen, Fujian, China Label location

DATE:2023/7/1 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint BlueAsia of Technical Services(Shenzhen) Co.,Ltd./Building C, No. 107, Shihuan Road, Shiyan Sub-District Baoan District, Shenzhen, Guangdong Province, China (Name of Agent company name and address) to act as our agent in the I certify that submitted preparation of documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commissions regulations will have affixed to it a label identical to that submitted for approval with this application. this application for equipment certification. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Xiamen Wenatone Medical Technology Co., Ltd.

/805A, Jianye building,Torch hi-Tech(Xiang An) industrial parkXiamen China(Applicant Name and address)

<Signature>

NameYongQuan Liu TitleGeneral MANAGER CompanyXiamen Wenatone Medical Technology Co., Ltd.

DATE2023/7/1 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: _2A7JZ-002__ Product Name: _Sound amplifier___ Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential:

(List here the documents for which you are seeking confidentiality for example ) Schematics Block diagram Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors.

<Signature>

NameYongQuan Liu TitleGeneral MANAGER CompanyXiamen Wenatone Medical Technology Co., Ltd.

Declaration FCC ID:2A7JZ-002 Product Name:Sound amplifier Mode No:discovery CR430S B+

We.declare that the device have left and right earphone,the left and right earphone are electrically identically.

<Signature>

NameYongQuan Liu TitleGeneral MANAGER CompanyXiamen Wenatone Medical Technology Co., Ltd.

Xiamen Wenatone Medical Technology Co., Ltd. Covered Equipment Certification Attestation Letter DATE2023/7/1 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2A7JZ-002 Xiamen Wenatone Medical Technology Co., Ltd. (the applicant) certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not covered equipment.

(the applicant) certifies that, as Xiamen Wenatone Medical Technology Co., Ltd. of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Signed:

Printed name: YongQuan Liu Title: General MANAGER Company Name: Xiamen Wenatone Medical Technology Co., Ltd. Date: 2023/7/1

Xiamen Wenatone Medical Technology Co., Ltd DATE TO:

Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2A7JZ-002 FRN of applicant: 0032570566 Per section 2.911(d)(7) of the FCC rules, [Xiamen Wenatone Medical Technology Co., Ltd.]

(the applicant) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process:

Company Name: WENATONE LLC FCC Registration Number (FRN): 0034047936 Physical U.S. Company Address: 138 Riverview Avenue, Longmeadow, MAUSA Contact Person: Leo Liu Agent Email Address: alan@wenatone.com The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed:

Printed name: yongquanliu Agent Signed (if different from Applicant):

Signed:

Title: General MANAGER Company Name: Xiamen Wenatone Medical Technology Co., Ltd. Date: June 9, 2023 Printed name: Leo Liu Signed:

Title: General MANAGER Company Name: WENATONE LLC Date: June 9, 2023

* the applicant must designate a contact located in the United States for purposes of acting as the applicants agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process.