2AA7X-WH210AWireless Headphones

Shenzhen Compoka Electronic Technology Co., Ltd Add: 4/5 F, Building B, Yi Shida Industrial Park,Xintang Village, Guanlan Town Shenzhen China Tel: 86-755-28089215 FAX: 86-755-28089215 Attestation Letter D ate: 2023-9-13 F EDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 D ear Sir or Madam: Our product Wireless Headphones, model: WH210A, WH210A, FCC ID:2AA7X-WH210A, for marketing purpose, this product only supports (GFSK, π/4-DQPSK).The other functions, bands and modes was disabled to use by manufacturer in the so ftware, the end user has no capability to activate it. S incerely, Sig nature: Printed Name: Ting He Title: Manager

Shenzhen Compoka Electronic Technology Co., Ltd Add: 4/5 F, Building B, Yi Shida Industrial Park,Xintang Village, Guanlan Town Shenzhen China Tel: 86-755-28089215 Email: [email protected] DECLARATION OF SIMILARITY Date: 2023-9- 13 To whom it may concern Dear Sir or Madam: We, Shenzhen Compoka Electronic Technology Co., Ltd., hereby declare that the product: Wireless Headphones, model: WH210A is electrically identical with the model: BSBTH21 which was tested by China Certification ICT Co., Ltd (Dongguan) with the same electromagnetic emissions and electromagnetic compatibility characteristics. A description of the differences between these models and that are declared similar are as follows: They are the same product, and just the different model name. the rest are the same. The detail information, please check the reports. Please contact me should there be need for any additional clarification or information. Best Regards, Signature: Printed Name: Ting He Title: Manager

China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-EXP Page 1 of 5 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-EXP Page 2 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-EXP Page 3 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-EXP Page 4 of 5 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-EXP Page 5 of 5

6mm CSP-WH210A-2302 6mm 6mm 5mm 38.1mm 5.644mm 18.3mm 14.1mm 5mm 07/23 Model: BSBTH21 Input: 5V 1A FCC ID: 2AA7X-WH210A Made in China 03/23 Model: BSBTH21 Input: 5V 1A FCC ID: 2AZ8N-WH210A Made in China

China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-00B Page 52 of 54 5. RF EXPOSURE EVALUATION 5.1 Applicable Standard According to§15.247(i) and §1.1310, 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 KDB447498 D01 General RF Exposure Guidance v06: 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)] ꞏ [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where • f(GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. 5.2 Measurement Result The max conducted power including tune-up tolerance is 2.0 dBm (1.58 mW). [(max. power of channel, mW)/(min. test separation distance, mm)][√f(GHz)] =1.58/5*(√2.480) = 0.5< 3.0 Result: Compliant. The stand-alone SAR evaluation is not necessary.

Inverted F Antenna Specification ITEMANTSPEC Model Name 2.4G ANT Center Frequency Horizont alVertical 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz -1.26 -0.76 -5.25 -2.46 MAX.Gain0dBi Polarization Horizontal and Vertical Azimuth Beam Pattem Omni-directional Impedance50Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length(mm)Anteeeeeeeeeeeeeeeeeeeeeeeeeeennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPhhhhhhhhhhhhhhhhhhhhhhhoooooooooooooooooooooottttttttooooooooooooooo & Length(mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) 0 0  Frequency (MHz) Gain(dB) Max Min Avg 2400 -1.26181 -30.0801 -7.18829 2450 -0.766201 -36.5612 -7.48003 2500 0 -22.0316 -6.59127     Frequency (MHz) Gain(dB) Max Min Avg 2400 -5.2536 -22.168 -12.4295 2450 -2.4682 -24.5847 -10.4773 2500 0 -29.5216 -9.2057 ANT Test Labs:Attestation of Global Compliance Co.,Ltd

TEST REPORT Applicant: Shenzhen Compoka Electronic Technology Co., Ltd Address: 4/5 F, Building B, Yi Shida Industrial Park, Xintang Village, Guanlan Town Shenzhen China FCC ID: 2AA7X-WH210A Product Name: Wireless Headphones Standard(s): 47 CFR Part 15, Subpart C(15.247) ANSI C63.10-2013 KDB 558074 D01 15.247 Meas Guidance v05r02 The above equipment has been tested and found compliant with the requirement of the relative standards by China Certification ICT Co., Ltd (Dongguan) Report Number: CR230952698-00B Date Of Issue: 2023/9/30 Reviewed By: Julie Tan Title: RF Engineer Approved By: Sun Zhong Title: Manager Test Laboratory: China Certification ICT Co., Ltd (Dongguan) No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China Tel: +86-769-82016888 China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-00B Page 2 of 54 Test Facility The Test site used by China Certification ICT Co., Ltd (Dongguan) to collect test data is located on the No. 113, Pingkang Road, Dalang Town, Dongguan, Guangdong, China. The lab has been recognized as the FCC accredited lab under the KDB 974614 D01 and is listed in the FCC Public Access Link (PAL) database, FCC Registration No. : 442868, the FCC Designation No. : CN1314. The lab has been recognized by Innovation, Science and Economic Development Canada to test to Canadian radio equipment requirements, the CAB identifier: CN0123. Declarations China Certification ICT Co., Ltd (Dongguan) is not responsible for the authenticity of any test data provided by the applicant. Data included from the applicant that may affect test results are marked with a triangle symbol “▲”. Customer model name, addresses, names, trademarks etc. are not considered data. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report cannot be reproduced except in full, without prior written approval of the Company. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report may contain data that are not covered by the accreditation scope and shall be marked with an asterisk “★”. China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-00B Page 3 of 54 CONTENTS T EST FACILITY .......................................................................................................................................... 2 DECLARATIONS .......................................................................................................................................... 2 DOCUMENT REVISION HISTORY .......................................................................................... 5 1. GENERAL INFORMATION .................................................................................................... 6 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ....................................................... 6 1.2 DESCRIPTION OF TEST CONFIGURATION ........................................................................................... 7 1.2.1 EUT Operation Condition: ............................................................................................................................. 7 1.2.2 Support Equipment List and Details .............................................................................................................. 7 1.2.3 Support Cable List and Details ...................................................................................................................... 7 1.2.4 Block Diagram of Test Setup ......................................................................................................................... 8 1.3 MEASUREMENT UNCERTAINTY .......................................................................................................... 9 2. SUMMARY OF TEST RESULTS .......................................................................................... 10 3. REQUIREMENTS AND TEST PROCEDURES .................................................................. 11 3.1 AC LINE CONDUCTED EMISSIONS .................................................................................................... 11 3.1.1 Applicable Standard ..................................................................................................................................... 11 3.1.2 EUT Setup.................................................................................................................................................... 12 3.1.3 EMI Test Receiver Setup ............................................................................................................................. 12 3.1.4 Test Procedure ............................................................................................................................................. 13 3.1.5 Corrected Amplitude & Margin Calculation ................................................................................................ 13 3.2 RADIATED SPURIOUS EMISSIONS ...................................................................................................... 14 3.2.1 Applicable Standard ..................................................................................................................................... 14 3.2.2 EUT Setup.................................................................................................................................................... 14 3.2.3 EMI Test Receiver & Spectrum Analyzer Setup ......................................................................................... 15 3.2.4 Test Procedure ............................................................................................................................................. 15 3.2.5 Corrected Amplitude & Margin Calculation ................................................................................................ 15 3.3 20 DB EMISSION BANDWIDTH ..........................................…

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China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-00B-TSP Page 1 of 2 EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View China Certification ICT Co., Ltd (Dongguan) Report No.: CR230952698-00B-TSP Page 2 of 2 Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View