FCC ID: 2AOM3-ST22 Smart Watch

Smart Watch User Manual Welcome to use our high-performance wrist-band Smart Watch which creates thoughtful and health experience for you. Device maintenance 1 Please remember the following tips when you maintain your Smart Watch:

Clean the Smart Watch regularly, especially its inner side, and keep it dry. Adjust the Smart Watch tightness to ensure air circulation. Excessive skincare product should not be used for the wrist wearing the Smart Watch. Please cease wearing the Smart Watch in case of skin allergy or any discomfort. Schematic diagram of main body of the Smart Watch Middle heart rate test, lower charging position. 2 Power-on 3 Long press the side button for 3 seconds or plug in the Magnetic charging cable to charge the Smart Watch. APP Downloading and binding of Smart Watch APP 1. APP 1.Download and install APP APP Scan QR code with mobile phone to download APP. IOS App store, Da Fit Android Da Fit For IOS system, select APP storesearch Da Fit Android system, select Google Play to download and install Da Fit.Or scan QR code to download Da Fit APP Da Fit APP Store: Da Fit Da Fit 3 Google Play: Da Fit 5.1 IOS 8.0 4.0 . Note: your mobile phone must support Android 5.1 or IOS 8.0 or above, and Bluetooth 4.0 or above. APP Bind Smart Watch with APP 1. 1.Click on "Add Device" to bind the Smart Watch. 2. 2. Click on your device in the device list scanned. 4. 4. Successfully bound. 3.IOS Android 3.The IOS system will show a Bluetooth pairing request and you can click on Bluetooth to confirm. Connect it directly Android to system.

"Pairing"

4 Blueooth call connect Android IPhoneAPP 1. 2. AndroidIPhone: After the APP successfully connects to the watch's Bluetooth. 1. The phone will automatically pop up a "pairing" request, click "Allow". 2. For some brands of mobile phone models, there is no need to pop up the pairing confirmation permission. After connecting to Bluetooth, the call function is also directly connected. After the binding is successful, you can answer and make calls on the watch. Remove Bluetooth Call connection Android AndroidFor the Android mobile phone, the device can be disconnected from your mobile phone by simply clicking on Remove device. 5 IPhone --- ST22 iPhone: firstly, users need dismiss pair, then enter into mobile phone Setting Bluetooth, find ST22, click icon on the right, ignore device, watch and mobile phone are disconnection. Introduction of Smart Watch functions Power-on status switch the menu interfaces of main screen, as the interfaces shown in the following;

6 1. 1. Introduction of main interface functions APP . After the smart bracelet and APP are first paired, the time and date of the mobile phone will be synchronized. 2 2. Step counting, distance and calorie The step-counting interface shows steps. Wear the smart bracelet on wrist, and the smart bracelet can automatically count steps, distance and calories. 3. 3. Sleep monitoring Wearing the smart bracelet at night to automatically judge whether you are in the sleep state, to record deep sleep and light sleep respectively, and to summarize the total sleep time to help you monitor your sleep quality. The sensor can measure your sleep quality according to the range and frequency of wrist movements when you sleep. Note: Because users sleep time and habits are different, the time of sleep monitoring is only for reference. 7 4. 4. Heart rate measurement Enter the heart rate test interface, the motor will vibrate once after Start measurement and Stop, and the current measurement data will be displayed. 5. 5.Exercise Sports interface, including a variety of sports, walking, running, cycling, skipping rope, badminton, basketball, football and so on. 6. 6.AI voice Click on the voice, through the connection with the mobile phone, the user's spoken language is converted into text, intelligent dialogue and intelligent interaction of instant question and answer. 7. 7. Phone

, Turn on the Bluetooth function of your phone and smartwatch. The phone searches for the smartwatch's Bluetooth device and initiates pairing. When both parties confirm the pairing, there will be a prompt that the connection is successful. Click the dial pad of the watch to dial and answer the phone. 8. 8.Blood pressure Enter the blood pressure test interface, the motor will vibrate once after Start measurement and Stop, and the current measurement data will be displayed. 5 3 2 3 The environment for measuring blood pressure should be quiet with an appropriate temperature. The user should rest for at least 5 minutes, and avoid tension, anxiety and emotional excitement before measurement. Repeatedly measure blood pressure for three times at the interval of 2 minutes. Record the average of three readings. 8 9. 9.Blood oxygen Enter the blood oxygen test interface, the motor will vibrate once after Start measurement and Stop, and the current measurement data will be displayed.

(Sp2) (Hb2)

(Hb,hemoglobin) Blood oxygen saturation (Sp2) is the percentage of the volume of oxyhemoglobin (Hb2) combined by oxygen in the blood to the volume of all (Hb,hemoglobin) which can be combined, i.e, the concentration of blood oxygen in the blood. Note: the data measured for blood pressure and blood oxygen are for reference only, and cannot be used as the basis of relevant medical purposes. 10. 10.Weather 6 The weather page will display the current weather today, and swipe up to display the weather forecast for the next 6 days.

,, For weather information, it needs to connect with the client end before data can be obtained. If the disconnection time is long, the weather information cannot be updated. 11. 11. Messages 5 5 You can view the content pushed by the message in the information interface. At most five messages can be saved. After five messsages are saved, the messages displayed before will be replaced by new messages one by one. 12. 12.Shutter APP After connecting with the mobile phone, the smart bracelet can be used as a remote controller for the mobile phone camera. Open Photo control in APP to Shake the smart bracelet and click on the icon to take a photo. 9 13. 13. Music control

After connecting with the mobile phone, the smart bracelet can control the music player of the mobile phone. When the mobile phone plays music, you can use the smart bracelet to control the mobile phone for playing/pausing, the previous song and the next song. 14. 14.Flashlight After opening, the screen will be adjusted to the maximum brightness and always on, and you can exit the interface after swiping left. 15. 15.Setting APP Click the "Settings" icon to enter the function list, including display, caller ID, do not disturb, power saving mode, telephone switch, call reset, brightness adjustment, vibration, theater mode, factory recovery, shutdown, about, and app download Remove Device For the Android mobile phone, the device can be disconnected from your mobile phone by simply clicking on Remove device.

For Apple mobile phone after binding removal, you need to click on the symbol on the right in Setting- Bluetooth, and choose to ignore the device. As shown below:

10 Frequently Asked Questions (FAQs) 1. 1. Why does the Smart Watch automatically disconnect Bluetooth when the Android screen goes out?

1>. APPDa Fit 1> Lock background APP. When the Da Fit process is cleared, the Smart Watch will be disconnected from the mobile phone. 2> APP 11 2 > Set APP self-startup 3> APP APP 3 > Unrestricted background operation. The Android mobile phone installed with APP intelligently restricts the background operation by default, and App should be set manually without any restriction. 2.?

2. Why cannot the Smart Watch receive message push?

1>. 1> Please confirm that you have turned on the switch for message push at the mobile phone client. 2>.,;

,(,QQ 2 > Please confirm that messages can be displayed normally in the mobile phone notification bar. The message push on the Smart Watch is completed by reading the message from the mobile phone notification bar. The Smart Watch will not receive the message push if there is no message in the mobile phone notification bar. (You need to find notification settings in the mobile phone settings, and turn on the notification switch of WeChat, QQ, call, SMS and mobile phone client). 3 >--- Da Fit 3 >Turn on the mobile phone --- Settings. Enter "Notification use right" on the top search box, re-open Da Fit. 3.?

3. Why can't take a hot bath with the Smart Watch?

,,,, Answer: the bath water has a relatively high temperature, and generates a lot of vapor which is in the gas phase with small molecular radius and can easily infiltrate into the Smart Watch from the shell gap. When the temperature drops down, the vapor will condensate into liquid-phase droplets which will easily cause the short circuit inside the Smart Watch and damage the circuit board and then damage the Smart Watch.

Warning:

Please consult your doctor before you take a new sport. The Smart Watch should not be used for any medical purpose though it may dynamically monitor the heart rate at real time. 12 FCC Statement 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 modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

FCC ID: 2AOM3-ST22 Page 1 of 1 Report No.: CTL2302083072-WF FCC ID Label Information Label location:

Smart Watch Model: ST22 FCC ID: 2AOM3-ST22

ShenZhen YaWell intelligent Technology Co.,Ltd. A402 Wuhan University, Shenzhen Research Institute, No. 6 Yuexing 2nd Road Gaoxin District YueHai Street, Nanshan District, Shenzhen, China. Date2023/05/22 Product Model Number: ST22 FCC ID2AOM3-ST22 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:

Testing Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By:

Contact Listed on FCC Wesbite Title: Manager Email: hbyuhaitao@163.com Telephone: 15118105903 On behalf of: ShenZhen YaWell intelligent Technology Co.,Ltd. Effective Date: April 2, 2020 Revision Date:

QSF 7.6.4-8 Agent Authorization Letter Template Revision: 0 Page 1 of 1

Shenzhen Huaxunshitong Technology Co.,Ltd. Antenna specification Customer name: Yawei Project name ST22 Antenna frequency band BT support+shell fragment shrapnel Single support+FPC+thimble FPC FM aerial GPS aerial Specification description silk-screenST22 coaxial-line WIFI aerial:

FPC+wire rod PCB+wire rod:

Customer confirmation Supplier confirmation Radio frequency confirmation Structural confirmation check contacts Wang pengchao mobile phone 13480925226 telephone 0755-23705212 facsimile 0755-23705213 mailbox szhuaxunshitong@126.com address:F3-005, Hongfenghua Internet Creative Park, No.1 Huangtiandamen Road, Hangcheng Street, Baoan District, Shenzhen

:R-A 1 4 2023-3-27 1.Test environment test project equipment 1. S-parameter 1. Return Loss

: Agilent E5071B 2. VSWR HP 8753D 2. Active 1. TRP 1. ETS 7x4x3 m (3D) Chamber 2. TIS ETS 5x3x3 m (3D) Chamber 3.Passive 1.Gain2.Efficiency 1.ETS 7x4x3 m (3D) Chamber 2.: Agilent 8960 E5515B 2 StarPoint SP6011 ETS 5x3x3 m (3D) Chamber 2. Agilent E5071B HP 8753D 2.matching circuit-BT aerial Our company has not made any modification to the matching circuit

:R-A 2 4 2023-3-27 3 Antenna position map 4 Efficiency and gain 5.BT Measured effect of antenna

:R-A 3 4 2023-3-27 6.Structural drawings

:R-A 4 4 2023-3-27

ShenZhen YaWell intelligent Technology Co.,Ltd. Address: A402, Wuhan University, Shenzhen Research Institute, No. 6 Yuexing 2nd Road, Gaoxin District, Yuehai Street, Nanshan District, Shenzhen, China Date: 2023-05-22 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing SUBJECT: FCC Application for FCC ID: 2AOM3-ST22 To Whom It May Concern:

[ShenZhen YaWell intelligent 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. Sincerely, Signature:

Date: 2023-05-22

ShenZhen YaWell intelligent Technology Co.,Ltd. Address: A402, Wuhan University, Shenzhen Research Institute, No. 6 Yuexing 2nd Road, Gaoxin District, Yuehai Street, Nanshan District, Shenzhen, China Date: 2023-05-22 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing SUBJECT: FCC Application for FCC ID: 2AOM3-ST22 To Whom It May Concern:

[ShenZhen YaWell intelligent Technology Co.,Ltd.] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely, Signature:

Date: 2023-05-22

ShenZhen YaWell intelligent Technology Co.,Ltd. A402, Wuhan University, Shenzhen Research Institute, No. 6 Yuexing 2nd Road, Gaoxin District, Yuehai Street, Nanshan District, Shenzhen, China Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2AOM3-ST22 To Whom It May Concern, Date: May 22, 2023 Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR 2.803 and the importation rules in Title 47 CFR 2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s);

External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Yves Yu Title: Manager

ShenZhen YaWell intelligent Technology Co.,Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: May. 22, 2023 Ref: Attestation Statements Part 2.911(d)(7) Filing FCC ID: (2AOM3-ST22)

[ShenZhen YaWell intelligent Technology Co.,Ltd.] (the applicant) certifies that, as of the date of the filing of the application, TianHeng Consulting, LLC is our designated U.S. agent for service of process for the above referenced FCC ID. [ShenZhen YaWell intelligent Technology Co.,Ltd.] 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. TianHeng Consulting, LLC accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Sincerely, Designated U.S. Agent Information:

Name: TianHeng Consulting, LLC Contact Person: Hualing Dong Address: 392 Andover Street, Wilmington, MA 01887, United States Tel.: +1 617-997-4010 Email: tianhengconsulting@gmail.com FRN: 0033401258 U.S. Agent Signature:

Applicant:

Company Name: ShenZhen YaWell intelligent Technology Co.,Ltd. Grantee Code: 2AOM3 Contact Name: Yves Yu Address: A402 Wuhan University, Shenzhen Research Institute, No. 6 Yuexing 2nd Road Gaoxin District YueHai Street, Nanshan District, Shenzhen, China. Tel.: 15118105903 Email: hbyuhaitao@163.com Applicant Signature: