2ATWG-ET11RWireless Headphones

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

QA-FR-172-A Shenzhen Yuangu Technology Co., Ltd. Add: No.101, 1st Factory Building, Hebei Industrial Park, Bantian Sub- district, Longgang District, Shenzhen, China Tel: 0755-23775550 Fax: 0755-23775550 Email: [email protected] FCC Confidential Authorization Date: 2021-2-5 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2ATWG-ET11R In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Shenzhen Yuangu Technology 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: Dong James Title: Product Certification Engineer

QA-FR-169-B Shenzhen Yuangu Technology Co., Ltd. ADD: No.101, 1st Factory Building, Hebei Industrial Park, Bantian Sub- district, Longgang District, Shenzhen, China TEL: 0755-23775550 FAX: 0755-23775550 E-Mail: [email protected] To FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia,MD 21046 Dear Sir/Madam, We, Shenzhen Yuangu Technology Co., Ltd. , FCC ID: 2ATWG-ET11R , hereby submits justification for placing the FCC ID label to the charging box. According to the FCC Regulation and Guidence (KDB Publication 784748 D01 v09R01) allows for the FCC to be removed to charging box if the device is unquestionably too small for the FCC ID label to be printed. The measurement of headset: Length (51.7mm)*Width (42.1mm)*High (28.3±0.2mm), label: Length 40.00(mm)*Width10.00(mm), charging box:96.10±0.3(mm)*62.50±0.3(mm)*33.60± 0.3(mm).Refer to the above quote, as the headset are too small for the FCC ID label to be printed, so the FCC ID label will be moved to the charging box. For details, please see below photos: Headset Unit:mm QA-FR-169-B Label Unit:mm Charging box Unit: mm Sincerely, Signature: Printed name: Dong James Title: Product Certification Engineer

EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS

EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Chip Antenna

FCC PART 15.247 RSS-GEN, ISSUE 5, MARCH 2019 AMENDMENT 1 RSS-247, ISSUE 2, FEBRUARY 2017 TEST REPORT For Shenzhen Yuangu Technology Co., Ltd. No.101, 1st Factory Building, Hebei Industrial Park, Bantian Sub-district, Longgang District,Shenzhen, China Report Type: Original Report Product Name: Wireless Headphones Re port Number: RDG210125803-00A Re port Date: 2021-02-05 Reviewed By: Ivan Cao Assistant Manager Test Laboratory: Bay Area Compliance Laboratories Corp. (Dongguan) No.12, Pulong East 1 st Road, Tangxia Town, Dongguan, Guangdong, China Tel: +86-769-86858888 Fax: +86-769-86858891 www.baclcorp.com.cn FCC ID: 2ATWG-ET11R IC: 26891-ET11R Bay Area Compliance Laboratories Corp. (Dongguan) Report No.: RDG210125803-00A Page 2 of 33 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 DECLARATIONS ............................................................................................................................................................ 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 FCC §15.247 (i) & §1.1310 & §2.1093- RF EXPOSURE ............................................................................................ 9 APPLICABLE STANDARD .............................................................................................................................................. 9 RSS-102 § 2.5.1 EXEMPTION LIMITS FOR ROUTINE EVALUATION – SAR EVALUATION ................... 10 APPLICABLE STANDARD ............................................................................................................................................ 10 FCC §15.203 & RSS-GEN CLAUSE 6.8 - ANTENNA REQUIREMENT ............................................................. 11 APPLICABLE STANDARD ............................................................................................................................................ 11 ANTENNA INFORMATION AND CONNECTOR CONSTRUCTION ..................................................................................... 11 FCC §15.209, §15.205, §15.247(d) & RSS-247 CLAUSE 5.5, RSS-GEN CLAUSE 8.10- SPURIOUS EMISSIONS ................................................................................................................................................................. 12 APPLICABLE STANDARD ............................................................................................................................................ 12 EUT SETUP ................................................................................................................................................................ 12 EMI TEST RECEIVER & SPECTRUM ANALYZER SETUP .............................................................................................. 13 TEST PROCEDURE ...................................................................................................................................................... 13 CORRECTED AMPLITUDE & MARGIN CALCULATION ................................................................................................. 13 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 14 TEST DATA ................................................................................................................................................................ 14 FCC §15.247(a) (2) & RSS-247 CLAUSE 5.2 a) &RSS-GEN CLAUSE 6.7–6 dB EMISSION BANDWIDTH AND 99% OCCUPIED BANDWIDTH ..................................................................................................................... 20 APPLICABLE STANDARD ............................................................................................................................................ 20 TEST PROCEDURE ...................................................................................................................................................... 21 TEST EQUIPMENT LIST AND DETAILS ......................................................................................................................... 21 TEST DATA ..............................................…

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EXHIBIT D - TEST SETUP PHOTOGRAPHS Radiated Emission Below 1GHz View Radiated Emission Above 1GHz View