2AEF8OSTIATWS Earphone

F CC WARNING This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device ma y not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority t o operate the equipment. FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment . This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Date: 2020-3-18 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir/Madam, We,Dongguan XinYao Electronic Industrial Co. LTD. , hereby authorize Bay Area Compliance Laboratories Corp. to act as a laboratory for testing and test report generation for the following project(s): The right headset and left headset have the same circuit diagram, PCB layout ,RF parameter and key components. Right Board Left Board Sincerely, Dongguan XinYao Electronic Industrial Co. LTD. ADD: Liuhua Street, Xiakou, Dongcheng District,Dongguan, Guangdong，China TEL: +86-0769-86212262 FAX: +86-0769-22086785 E-mail: [email protected] Signature: Benny Tan CEO (Product description: TWS earphone, FCC ID: 2AEF8OSTIA)

QA-FR-170-B Dongguan XinYao Electronic Industrial Co. LTD. ADD: Liuhua Street, Xiakou, Dongcheng District,Dongguan, Guangdong，China TEL: +86-0769-86212262 FAX: +86-0769-22086785 E-mail: [email protected] FCC Authorization Date: 2020-03-18 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We , Dongguan XinYao Electronic Industrial Co. LTD, Hereby authorizes Bay Area Compliance Laboratories Corporation 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 Laboratory Corporation 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 Yours, Client’s signature Benny Tan CEO

QA-F R-171-A Do ngguan XinYao Electronic Industrial Co. LTD. Add: Liuhua Street, Xiakou, Dongcheng District,Dongguan, Guangdong，China Tel: +86-0769-86212262 Fax: +86-0769-22086785 Email: [email protected] FCC Confidential Authorization Date: 202 0-03-18 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AEF8OSTIA In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, (Dongguan XinYao Electronic Industrial Co. LTD) hereby requests long-term confidential treatment of information accompanying this application as outlined below: Block Diagra m Sch emati cs O peration Descriptio n Th e 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: Benny Tan CEO

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Left Earbuds Right Earbuds Charger

58.60mm 11.31 mm 12.80mm 12.80mm 33.00mm

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Left Earbuds Antenna Right Earbuds Charger

FCC PART 15.247 TEST REPORT For Dongguan XinYao Electronic Industrial Co. LTD Liuhua Street, Xiakou, Dongcheng District,Dongguan, Guangdong，China Report Type: Original Report Product Type: TWS earphone Re port Number: RDG200212002-00B Re port Date: 2020-03-13 Reviewed By: Ivan Cao Assistant Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.69 Pulongcun, Puxinhu Industry Area, Tangxia, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn FCC ID: 2AEF8OSTIA Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG200212002-00B Page 2 of 40 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 DECLARATIONS ............................................................................................................................................................ 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 8 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 8 SUPPORT CABLE LIST AND DETAILS ............................................................................................................................ 8 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................. 10 FCC §15.247 (i) & §1.1310 & §2.1093- RF Exposure ............................................................................................... 11 APPLICABLE STANDARD ............................................................................................................................................ 11 FCC §15.203 - ANTENNA REQUIREMENT ........................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................................ 12 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 12 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 EUT SETUP ................................................................................................................................................................ 13 EMI TEST RECEIVER SETUP ....................................................................................................................................... 13 TEST PROCEDURE ...................................................................................................................................................... 13 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 14 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 14 TEST DATA ................................................................................................................................................................ 14 FCC §15.209, §15.205 & §15.247(d) - SPURIOUS EMISSIONS ............................................................................. 17 APPLICABLE STANDARD ............................................................................................................................................ 17 EUT SETUP ................................................................................................................................................................ 17 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 18 TEST PROCEDURE ..............................................................................................................................…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View