2A2JJYE680BElectronic Blood Pressure Monitor

User's Manual Electronic Blood Pressure Monitor Please read the user's manual closely before using! YE680BWH1-WENN YE680BWH1-WENB YE680BBL1-WENN YE680BBL1-WENB YE680BWH2-WENN YE680BWH2-WENB YE680BBL2-WENN YE680BBL2-WENB YE680B Date of ：2025.04issue www.yuwell.com Made in China JIANGSU YUYUE MEDICAL EQUIPMENT & SUPPLY CO.,LTD. No.1 Baisheng Road Development Zone, Danyang, Jiangsu 212300 CHINA Metrax GmbH Rheinwaldstr. 22, 78628 Rottweil, GERMANY YY-BPM0343C-01(A/0) 01 Eight for option，please consult the table below for information about the different configurations for this monitor. Contents Before using Measuring method Common problems Product features...........................................................01 Operation guide..........................................................03 Product structure and parts....................................05 Cautions.........................................................................09 Important notes............................................................10 Bluetooth transmission...............................................16 Battery installation.......................................................17 Time and date and voice volume setting.............18 Unit setting....................................................................19 Using method of cuff.................................................20 Measuring posture......................................................22 Start measuring...........................................................23 Blood pressure level classification.........................25 Memory function.........................................................26 Static mode..................................................................28 Common questions of blood pressure measure- ment ..............................................................................30 Common fault and trouble shooting.....................32 Alarm system................................................................33 Maintenance.................................................................34 Specifications...............................................................36 Electromagnetic compatibility information..........38 Product Features Product name Configuration White Panel+WHO+Backlight+Voice Blue Panel+WHO+Backlight+Voice White Panel+WHO+Backlight+Voice+Bluetooth Blue Panel+WHO+Backlight+Voice+Bluetooth White Panel+WHO+AFib+Backlight+Voice Blue Panel+WHO+AFib+Backlight+Voice White Panel+WHO+AFib+Backlight+Voice+Bluetooth Blue Panel+WHO+AFib+Backlight+Voice+Bluetooth YE680BWH1-WENN YE680BBL1-WENN YE680BWH1-WENB YE680BBL1-WENB YE680BWH2-WENN YE680BBL2-WENN YE680BWH2-WENB YE680BBL2-WENB Electronic Blood Pressure Monitor YE680B In the table： •" WHO " is abbreviation for " World Health Organiza- tion" ，indicating that it has the function of blood pressure level classification. •" AFib " is abbreviation for " Atrial Fibrillation" ， indicating that it has the function of evaluate the possibility of AFib. Product Features 0203 Operation guide Connect the power source as shown below. Power-on Or install four AA batteries 1. Open the battery cover, and install the batteries properly. 2. Close the battery cover. (Please turn to page 17 for details) This device uses the oscillometric method of blood pressure measurement.Please follow the steps as shown below. Indication for irregular heartbeats Indication for movement error Detection for cuff wearing Last Memory Indication Except the power adapter supplied by the manufacturer as spare parts, using any unspecified accessories or power adapter may cause increasing emission or decreasing immunity of the instrument. This device is not rechargeable. Please connect the power source or install four AA batteries. Voice function voice on voice off Bluetooth icons is only applicable to the model with bluetooth function. Data storage 2 USERSx140 Memories LCD display with white backlight The AFib icon only applies to the model with AFib detection. AFib Icon The display interface is introduced with the full functionality, including optional backlight，voice, Bluetooth, WHO and AFib features. Please refer to the actual monitor you purchased. The drawings printed in the User's Manual are only for illustra- tion. Please refer to the actual object for details. Tips! Blood pressure level classification Memory Plug port Power adapter socket Battery cover Operation guide Press the " " button to check the measuring records. This monitor can display the average of last three measurements and store 140x2 records. (Please turn to page 24 for details.) 2 -3cm cm Measurement Check the records 1. Using method of cuff Wearing the cuff and make the lower edge 2cm~3cm above the elbow, keep the air tube inside of the arm. (Please turn to page 20 for details.) 2 Measuring posture. Sit straightly, keep the center of cuff and heart at the same level. (Please turn to page 22 for details.) 3. Start measuring Sit still for 5 minutes and then press the " " button to measure. (Please turn to page 23 for details.) 04 2. Main part Display User A/B button switch button Start/Stop button 3. Cuff Air tube Cuff Air plug 22~45cm 2~3cm There are 8 types of cuff provided by yuwell. The range of arm circumference is printed on each cuff. Please subject to the received type. 05 Product structure and parts 1. Package contents Main part x1，Cuff x1, User's manual x1，Storage bag x1, Warranty card x1，AA batteries x4，AC adapter(option- al) x1，USB cable(optional) x1 Note：The AC adapter and USB cable are optional. Please refer to the packing contents on the box for detailed information. 07 5. Display Product structure and parts 4. AC adapter and USB cable AC adapter (optional) USB cable (optional) AC adapter: Input: 100V-240V~ 50/60Hz 0.35A MAX Output: 5V 1000mA MFR: WEIHAI HITAI ELECTRONICS Co.,LTD. EU Model: HT-C38B-0510EW US Model: HT-C38B-0510WW UK Model: HT-C38B-0510UW 06 Please select a suitable size cuff according to the ar…

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User's Manual Electronic Blood Pressure Monitor Please read the user's manual closely before using! YE660EWH1-WENN YE660EWH1-WENB YE660EBL1-WENN YE660EBL1-WENB YE660EWH2-WENN YE660EWH2-WENB YE660EBL2-WENN YE660EBL2-WENB Date of ：2025.04issue www.yuwell.com Made in China JIANGSU YUYUE MEDICAL EQUIPMENT & SUPPLY CO.,LTD. No.1 Baisheng Road Development Zone, Danyang, Jiangsu 212300 CHINA Metrax GmbH Rheinwaldstr. 22, 78628 Rottweil, GERMANY YY-BPM0337C-01(A/0) YE660E Contents 01 Product features Product name Configuration White Panel+WHO+Backlight+Voice Blue Panel+WHO+Backlight+Voice White Panel+WHO+Backlight+Voice+Bluetooth Blue Panel+WHO+Backlight+Voice+Bluetooth White Panel+WHO+AFib+Backlight+Voice Blue Panel+WHO+AFib+Backlight+Voice White Panel+WHO+AFib+Backlight+Voice+Bluetooth Blue Panel+WHO+AFib+Backlight+Voice+Bluetooth YE660EWH1-WENN YE660EBL1-WENN YE660EWH1-WENB YE660EBL1-WENB YE660EWH2-WENN YE660EBL2-WENN YE660EWH2-WENB YE660EBL2-WENB Electronic Blood Pressure Monitor YE660E Eight for option，please consult the table below for information about the different configurations for this monitor. In the table： •" WHO " is abbreviation for " World Health Organiza- tion" ，indicating that it has the function of blood pressure level classification. •" AFib " is abbreviation for " Atrial Fibrillation" ， indicating that it has the function of evaluate the possibility of AFib. Before using Measuring method Common problems Product features...........................................................01 Operation guide..........................................................03 Product structure and parts....................................05 Cautions.........................................................................09 Important notes............................................................10 Bluetooth transmission...............................................16 Battery installation.......................................................17 Time and date and voice volume setting.............18 Unit setting....................................................................19 Using method of cuff.................................................20 Measuring posture......................................................22 Start measuring...........................................................23 Blood pressure level classification.........................25 Memory function.........................................................26 Static mode..................................................................28 Common questions of blood pressure measure- ment ..............................................................................30 Common fault and trouble shooting.....................32 Alarm system................................................................33 Maintenance.................................................................34 Specifications...............................................................36 Electromagnetic compatibility information..........38 03 Operation guideProduct features 02 Connect the power source as shown below. Power-on Or install four AA batteries 1. Open the battery cover, and install the batteries properly. 2. Close the battery cover. (Please turn to page 17 for details) This device uses the oscillometric method of blood pressure measurement. Please follow the steps as shown below. Except the power adapter supplied by the manufacturer as spare parts, using any unspecified accessories or power adapter may cause increasing emission or decreasing immunity of the instrument. This device is not rechargeable. Please connect the power source or install four AA batteries. Blood pressure level classification Indication for irregular heartbeats Indication for movement error Detection for cuff wearing Voice function voice on voice off Data storage 199 Memories LCD display with white backlight Bluetooth icons is only applicable to the model with bluetooth function. The AFib icon only applies to the model with AFib detection. AFib Icon The display interface is introduced with the full functionality, including optional backlight，voice, Bluetooth, WHO and AFib features. Please refer to the actual monitor you purchased. The drawings printed in the User's Manual are only for illustra- tion. Please refer to the actual object for details. Tips! Operation guideProduct structure and parts 2. Main part 3. Cuff There are 8 types of cuff provided by yuwell. The range of arm circumference is printed on each cuff. Please subject to the received type. Press the " " button to check the measuring records. This monitor can display the average of last three measurements and store 199 records. (Please turn to page 26 for details.) 2 -3cm cm Measurement Check the records 1. Using method of cuff Wearing the cuff and make the lower edge 2cm~3cm above the elbow, keep the air tube inside of the arm. (Please turn to page 20 for details.) 2 Measuring posture. Sit straightly, keep the center of cuff and heart at the same level. (Please turn to page 22 for details.) 3. Start measuring Sit still for 5 minutes and then press the " " button to measure. (Please turn to page 23 for details.) 05 04 Display Memory button Start/Stop button Power adapter socket Battery coverPlug port Air tube Cuff Air plug 22~45cm 2~3cm 1. Package contents Main part x1，Cuff x1, User's manual x1，Storage bag x1, Warranty card x1，AA batteries x4，AC adapter(option- al) x1，USB cable(optional) x1 Note：The AC adapter and USB cable are optional. Please refer to the packing contents on the box for detailed information. Product structure and parts 5. Display Product structure and parts 4. AC adapter and USB cable AC adapter (optional) USB cable (optional) 0706 1 2 3 4 5 6 7 8 10 11 12 13 14 15 9 Unit display Voice icon (optional) Bluetooth icon (optional) Battery power icon Inflation & Deflation icon Cuff wrapping icon Movement error icon Irregular heartbeat icon Time and date display Pulse display / Memory number Memor…

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Sincerely Yours, Sign ature: Printed Name: Caixia Yang Title: RA Engineer Company Name: Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. ADD: No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China TEL: +86 18252963550 FAX: +86-511-86900827 E-mail: [email protected] Attestation Letter Date: 2025-08-26 To Whom It May Concern, The chip installed in our product Electronic Blood Pressure Monitor (model name: YE680B,YE660E,FCC ID: 2A2JJYE680B), for this product, it only activates BLE(1 Mbps): 2402-2480 MHz; the other bands are disabled by using the software. Please contact me if there is need for any additional clarification or information. Best Regards,

Company name: Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. ADD: No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China TEL: +86 18252963550 FAX: +86-511-86900827 E-mail: [email protected] Attestation Letter Date: 08/25/2025 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911 (d) (5) (i) (ii) Filing FCC ID: 2A2JJYE680B Jiangsu Yuyue Medical Equipment & Supply 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. Jiangsu Yuyue Medical Equipment & Supply 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. Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. (“the applicant”) certifies that the equipment does not use Kaspersky's software information. Sincerely, Signature: Contact Person: Caixia Yang Title: RA Engineer

U.S. AGENT LETTER OF ATTESTATION Date: 2025-09-12 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2A2JJYE680B Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. certifies that, as of the date of the filing of the application, Yuwell Medtech USA LLC is our designated U.S. agent for service of process for the above referenced FCC ID. Jiangsu Yuyue Medical Equipment & Supply 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. Yuwell Medtech USA 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. Designated U.S. Agent Information: Company Name: Yuwell Medtech USA LLC Address: 5900 BALCONES DRIVE SUITE 100 Austin, TX 78731 United States FRN: 0036838977 Tel.: (440) 506-2691 Email: [email protected] Signed by (printed name): Zac Xu Signature: Applicant: Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. Address: No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China FRN: 0031126220 Tel: +86 18252963550 Email: [email protected] Signed by (printed name): Caixia Yang Signature:

QA-FR-170-B Company Name: Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. ADD: No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China TEL: +86 18252963550 FAX: +86-511-86900827 E- mail: [email protected] FCC Authorization Date: 2025-08-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, Jiangsu Yuyue Medical Equipment & Supply Co., Ltd., hereby authorizes Bay Area Compliance Laboratories Corp. (Kunshan) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Kunshan) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely, Signature: Printed Name: Caixia Yang Title: RA Engineer

QA-FR-171-A Company Name: Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. ADD: No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China TEL: +86 18252963550 FAX: +86-511-86900827 E-mail: [email protected] FCC Confidential Authorization Date: 2025-08-25 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2A2JJYE680B In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. hereby requests long-term confidential treatment of information accompanying this application as outlined below: Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature: Printed Name: Caixia Yang Title: RA Engineer

Company Name: Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. Add: No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China TEL: +86 18252963550 FAX: +86-511-86900827 E-mail: [email protected] Date: 2025-08-25 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 We, Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. hereby declare that product name: Electronic Blood Pressure Monitor (Model: YE680B, YE660E; FCC ID: 2A2JJYE680B) have identical hardware structures, and model: YE680B has been tested by Bay Area Compliance Laboratories Corp. (Kunshan). The differences of them are as follows: Model Differences YE680B The hardware structures are entirely identical, with differences lying in the liquid crystal screens, keypad (button panel) designs and color. YE680B have differences panel colors (white and blue) and cuff air plug colors (YE680B features yellow and blue; YE660E features white). YE660E Please contact me if there is need for any additional clarification or information. Best Regards. Signature: Printed Name: Caixia Yang Title: RA Engineer DECLARATION

Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 1 / 10 EXHIBIT A - EUT EXTERNAL PHOTOGRAPHS YE680B Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 2 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 3 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 4 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 5 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 6 / 10 YE660E Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 7 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 8 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 9 / 10 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 10 / 10

Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 1 / 6 EXHIBIT B - EUT INTERNAL PHOTOGRAPHS YE680B Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 2 / 6 BLE Antenna Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 3 / 6 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 4 / 6 YE660E BLE Antenna Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 5 / 6 Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 6 / 6

Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RKSA250825001-00B Page 13 of 46 FCC §1.1307(b) & §2.1093 - RF EXPOSURE Applicable Standard According to§2.1093and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB 447498 D01 General RF Exposure Guidance The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/ (min. test separation distance, mm)] · [√f (GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where 1. f (GHz) is the RF channel transmit frequency in GHz. 2. Power and distance are rounded to the nearest mW and mm before calculation. 3. The result is rounded to one decimal place for comparison. 4. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test Exclusion. Calculated Data: Mode Frequency Range (MHz) Max Tune-up Conducted Power★ Calculated Distance (mm) Calculated Value Threshold (1-g SAR) SAR Test Exclusion (dBm) (mW) BLE 1M 2402-2480 -3.0 0.5 5 0.2 3.0 Yes Note: 1. For the above tune up power were declared by the manufacturer. Conclusion: The device meets the exemption requirement.

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliance Laboratories Corp. (Kunshan). This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP, or any agency of the U.S. Government. FCC PART 15.247 TEST REPORT For Jiangsu Yuyue Medical Equipment & Supply Co., Ltd. No.1 Baisheng Road Development Zone, Danyang, Jiangsu province, 212300 China FCC ID: 2A2JJYE680B R e p o r t T y p e : O r i gi n a l R e p o r t P r o d u c t N a m e: E l e c t r o n i c B l o o d P r e s s u r e M o n i tor Report Number: RKSA250825001-00B Report Date: 2025-09-23 Reviewed By: Jenny Yang Approved By: Kyle Xu Prepared By: Bay Area Compliance Laboratories Corp. (Kunshan) No.248 Chenghu Road, Kunshan, Jiangsu Province, China Tel: +86-512-86175000 Fax: +86-512-88934268 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RKSA250825001-00B Page 2 of 46 TABLE OF CONTENTS REPORT REVISION HISTORY................................................................................................................................. 4 GENERAL INFORMATION ....................................................................................................................................... 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 5 OBJECTIVE ................................................................................................................................................................... 5 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 6 TEST FACILITY ............................................................................................................................................................. 6 SYSTEM TEST CONFIGURATION .......................................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 7 EUT EXERCISE SOFTWARE .......................................................................................................................................... 7 SPECIAL ACCESSORIES ................................................................................................................................................. 7 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 9 EXTERNAL I/O CABLE.................................................................................................................................................. 9 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 9 TEST EQUIPMENT LIST ......................................................................................................................................... 11 SUMMARY OF TEST RESULTS ............................................................................................................................. 12 FCC §1.1307(b) & §2.1093 - RF EXPOSURE ........................................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 CONCLUSION: THE DEVICE MEETS THE EXEMPTION REQUIREMENT. ........................................................................... 13 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 14 FCC §15.207 (a) - AC LINE CONDUCTED EMISSIONS ...................................................................................... 15 APPLICABLE STANDARD ............................................................................................................................................ 15 TEST SYSTEM SETUP .................................................................................................................................................. 15 EMI TEST RECEIVER SETUP ....................................................................................................................................... 15 TEST PROCEDURE ...................................................................................................................................................... 16 TEST RESULTS SUMMARY .......................................................................................................................................... 16 TEST DATA: SEE APPENDIX ....................................................................................................................................... 16 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS............................................................................. 17 APPLICABLE STANDARD ............…

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-1- Bluetooth antenna of PCB on-board specification V1.0 1、Index Document Type:PCB Antenna Document Version: Release Date: V1.0 Jan 20，2022 ItemContentPageRemark 1Index1 2Specification2 3Return Loss 2 4Radiation Pattern3 Model number: YE630CR-BL-ANT Manufacturer : Guangde Yarsun Electronics Technology Co.,Ltd Address: No.7 Pengju Road, Economic Development Zone, Guangde County, Anhui Province, China -2- 2、Specification Model number: YE630CR-BL-ANT Sample Photo: A. Electrical Characteristics Frequency2400 ~ 2500 MHz S.W.R.<1.6 Gain 3.09dBi Efficiency35% PolarizationLinear Impedance50 Ohm B. Material & Mechanical Characteristics Material of Radiatorplated copper C. Environmental Operation Temperature - 40 °C ~ + 85 °C Storage Temperature- 40°C~ + 105°C 3、Return Loss -3- 4、Radiation Pattern Radiation Pattern and Gain were dependent on measurement board design. The specification of coil antenna was measur ed based on the PCB size and installation position as shown in the below figure Test Board.

-1- Bluetooth antenna of PCB on-board specification V1.0 1、Index Document Type:PCB Antenna Document Version: Release Date: V1.0 Jan 20，2022 ItemContentPageRemark 1Index1 2Specification2 3Return Loss 2 4Radiation Pattern3 Model number: YE630CR-BL-ANT Manufacturer : Guangde Yarsun Electronics Technology Co.,Ltd Address: No.7 Pengju Road, Economic Development Zone, Guangde County, Anhui Province, China -2- 2、Specification Model number: YE630CR-BL-ANT Sample Photo: A. Electrical Characteristics Frequency2400 ~ 2500 MHz S.W.R.<1.6 Gain 3.09dBi Efficiency35% PolarizationLinear Impedance50 Ohm B. Material & Mechanical Characteristics Material of Radiatorplated copper C. Environmental Operation Temperature - 40 °C ~ + 85 °C Storage Temperature- 40°C~ + 105°C 3、Return Loss -3- 4、Radiation Pattern Radiation Pattern and Gain were dependent on measurement board design. The specification of coil antenna was measur ed based on the PCB size and installation position as shown in the below figure Test Board.

Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 1 / 3 EXHIBIT C - TEST SETUP PHOTOGRAPHS Conducted Emissions (Front View) Conducted Emissions (Left View) Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 2 / 3 Radiated Emissions (Below 30 MHz) Radiated Emissions (Below 1 GHz) Bay Area Compliance Laboratories Corp. (Kunshan) Project No.: RKSA250825001 3 / 3 Radiated Spurious Emissions (1 GHz-18 GHz) Radiated Spurious Emissions ( 18 GHz-25 GHz)