2A8TA-I86Open-Ear Headphones

Shenzhen Shengdaren Technology Co.,Ltd Covered Equipment Certification Attestation Letter 11/28/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2A8TA-I86 Shenzhen Shengdaren 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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Shenzhen Shengdaren 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 a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Shenzhen Shengdaren Technology Co.,Ltd (“the applicant”) certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Sunny Kang Title: Manager Company Name: Shenzhen Shengdaren Technology Co.,Ltd Date: 11/28/2025

Shenzhen Shengdaren Technology Co.,Ltd U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: November 28, 2025 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2A8TA-I86 Shenzhen Shengdaren Technology Co.,Ltd(“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Shenzhen Shengdaren Technology Co.,Ltd FRN: 0032923575 Address: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Signature: Contact Person: Sunny Kang Tel: 0755 21508085 Email: [email protected]

DATE: November 28, 2025 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A8TA-I86 Product Name: Open-Ear Headphones Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commission’s rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...) • Schematics • Block diagram • Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. <Signature> Name: Sunny Kang Title: Manager Company: Shenzhen Shengdaren Technology Co.,Ltd

Date: November 28, 2025 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Compliance Testing, LLC to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). Sincerely, <Signature> Name: Sunny Kang Title: Manager Company: Shenzhen Shengdaren Technology Co.,Ltd

DATE: November 28, 2025 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Shenzhen CCUT Quality Technology Co., Ltd. (1F, Building 35, Changxing Technology Indstrl Park Changzhen Community, Yutang Street,Shenzhen,China) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with Shenzhen Shengdaren Technology Co.,Ltd ( 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China). <Signature> Name: Sunny Kang Title: Manager Applicant Company: Shenzhen Shengdaren Technology Co.,Ltd

Shenzhen Shengdaren Technology Co.,Ltd Model Difference Statement Dear Sir/Madam, Added models I73, I76, I79, I83, I86, I86S, I91, I92, I93, P17, M5 Pro, P8, L9, L10, ZX9, RT7, C2 basis of the original product BS10 The color of appearance and model name of series models listed are different from the main model, but the circuit and the electronic construction are the same, declared by the manufacturer. Sincerely, Name: Sunny Kang Company name: Shenzhen Shengdaren Technology Co.,Ltd Address: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China

Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report Annex A. EUT External Photos Model: BS10 EUT View 1 EUT View 2 Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report EUT View 3 EUT View 4 Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report EUT View 5 EUT View 6 Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report EUT View 7

Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report Annex D. Label and Information FCC Label Sample FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report Annex B. EUT Internal Photos Model: BS10 EUT Internal View 1 EUT Internal View 2 Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report EUT Internal View 3 EUT Internal View 4 FPCB Antenna Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report EUT Internal View 5

FCC ID: 2A8TA-I86 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 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 Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. For BR+EDR Max Conducted Power(dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit 0.27 0(±1) 1 1.259 2480 5 0.3965 3.0 So a SAR test is not required

Report No: SSP25090039-1E FCC Test Report Page 1 of 46 FCC TEST REPORT FCC ID: 2A8TA-I86 Report No. : SSP25090039-1E Applicant : Shenzhen Shengdaren Technology Co.,Ltd Product Name : Open-Ear Headphones Model Name : BS10 Test Standard : FCC Part 15.247 Date of Issue : 2025-09-15 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. Report No: SSP25090039-1E FCC Test Report Page 2 of 46 Test Report Basic Information Applicant..................................: Shenzhen Shengdaren Technology Co.,Ltd Address of Applicant...............: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Manufacturer..........................: Shenzhen Shengdaren Technology Co.,Ltd Address of Manufacturer........: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Product Name.........................: Open-Ear Headphones Brand Name.............................: - Main Model..............................: BS10 Series Models..........................: See section 1.1 (Page 5) Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2020 Date of Test .............................: 2025-08-03 to 2025-08-15 Test Result...............................: PASS Tested By ................................: (Coke Huang) Reviewed By............................: (Lorzix Luo) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. Report No: SSP25090039-1E FCC Test Report Page 3 of 46 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................6 1.3 Compliance Standards ...........................................................................................................................................7 1.4 Test Facilities ........................................................................................................................................................7 1.5 List of Measurement Instruments ..........................................................................................................................8 1.6 Measurement Uncertainty .....................................................................................................................................9 2. Summary of Test Results ........................................................................................................................................... 10 3. Antenna Requirement ............................................................................................................................................... 11 3.1 Standard and Limit.............................................................................................................................................. 11 3.2 Test Result .......................................................................................................................................................... 11 4. Conducted Emissions ................................................................................................................................................ 12 4.1 Standard and Limit.............................................................................................................................................. 12 4.2 Test Procedure.................................................................................................................................................... 12 4.3 Test Data and Results .......................................................................................................................................... 13 5. Radiated Emissions ................................................................................................................................................... 16 5.1 Standard and Limit.............................................................................................................................................. 16 5.2 Test Procedure.................................................................................................................................................... 16 5.3 Test Data and Results .......................................................................................................................................... 18 6. Band-edge Emissions(Radiated) ............................................................................................................................... 22 6.1 Standard and Limit.............................................................................................................................................. 22 6.2 Test Procedure.................................................................................................................................................... 22 6.3 Test Data and Results .......................................................................................................................................... 22 7. Freque…

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RAIN Shenzhen Yongcheng International Technology Co., LTD Page 1 天 线 规 格 书 Ante nn a spec if ica ti on for appr ov al 客户名称 Customer name 机型 Model 天线频段 Antenna band 2.4GHZ 天线类型 Antenna type 天线材质 Antenna materia i86-FPC-ANT l FPC FPC 颜色 FPC color 料号 Material numbe black r 厂商 承 认 签 章 Baren accepted the signature 客 户 承 认 签 章 Client acknowledges signature 结构 structure 采购 Purchase 品质 QC 结构 structure 射频 radio frequency 工程 engineering 审核 To examine 品质 QC 盖章区 Sealare 日期 date a 盖章区 Sealare 日期 date a i86-FPC RAIN Shenzhen Yongcheng International Technology Co., LTD Page 2 目录 一:Device support & can test antenna types.......1 二:summariz.........................................2 三:Match circuit diagram & machine picture & anten na picture.......................................3 四:Antenna Standing Wave Ratio & Antenna Efficiency (VSWR)............................................ 4 五:3D pattern .......................................5 六:Structural drawing...............................6 RAIN Shenzhen Yongcheng International Technology Co., LTD 一:Device support & can test antenna types Page 3 RAIN Shenzhen Yongcheng International Technology Co., LTD (1)Antenna performanc 二:summarize e Descriptio 1.This approval sheet supports for MID project. FPC antennas include in this project. This report is for the performance of BT antenna. 2.Antenna shape size：Meet the requirement of MID 3.Antenna band：2400MHz~2500MHz 4.Antenna material：Antenna material meet the requirement of MID 5.Adhesive performance：Adhesive performance meet the requirement of MID 6.Antenna performance meet the spec below： n2.4GHZ~2.5GHzUnits VSWR ≤2 .0 A verage Antenna Gain ≥- 4.5 dB Antenna Efficiency≥40 Feed Impedance50 ohms Operating Temperature-40 to +85 deg C Polarization / AzimuthLinear / Omni-directional (2)Mechanical Information Mechanical Dimension Cable LengthNA DescriptionBT antenna MaterialFPC Coaxial CableNA Environmental Operation Temperature-40 to +85 deg C Storage Temperature-40 to +85 deg C Page 4 RAIN Page 5 Shenzhen Yongcheng International Technology Co., LTD 三:Match circuit diagram & machine picture & antenna picture (2) Machine picture & antenna picture 1: gold plating; 3: Surface black matte ink; 4: Meet the latest environmental requirements: RoHS&REACH; 5: The whole board shipment; RAIN Shenzhen Yongcheng International Technology Co., LTD Frequency(MHz 四:Antenna Standing Wave Ratio & Antenna Efficiency (VSWR) )VSWR 24001.29 24401.02 24801.38 Page 6 RAIN Shenzhen Yongcheng International Technology Co., LTD Page 7 五:3D patt er n RAIN Shenzhen Yongcheng International Technology Co., LTD Page 8 六:Structuraldrawing

Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report Annex C. Test Photos Conducted Emission Test View 1 Radiated Emission Test View Below 1GHz Report No: SSP25090039-1E FCC ID: 2A8TA-I86 Annex of Test Report Radiated Emission Test View Above 1GHz