2BS4M-YY01Wireless Bluetooth headset with headband

ThisdevicecomplieswithPart15oftheFCCRules. Operationissubjecttothefollowingtwoconditions:(1) Thisdevicemaynotcauseharmfulinterference,and(2) thisdevicemustacceptanyinterferencereceived, includinginterferencethatmaycauseundesiredoperation. Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcomplia ncecouldvoidtheuser'sauthoritytooperatetheequipment. Note: ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevi ce,pursuanttoPart15oftheFCCRules.Theselimitsaredesigned toprovidereasonableprotectionagainstharmfulinterferenceinaresidentialinstallation . Thisequipmentgenerates,uses,andcanradiateradiofrequencyenergy, and if notinstalled and used in accordance with the instructions, may cause harmful interferenceto radio communications. However, there is no guarantee that interferencewillnotoccurinaparticularinstallation. Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception, whichcanbedeterminedby turningtheequipmentoffandon, theuserisencouragedtotrytocorrecttheinterferencebyoneormoreofthefollowingme asures: -Reorientorrelocatethereceivingantenna -Increasetheseparationbetweentheequipmentandreceiver - Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthereceiveri sconnected -Consultthedealeroranexperiencedradio/TVtechnicianforhelp ThedevicehasbeenevaluatedtomeetgeneralRFexposurerequirements. Thedevicecanbeusedinportableexposureconditionswithoutrestriction. FCC Caution:

Foshan Nanhai Yangyue Electronics Co., Ltd (Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China) Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: (2025/11/27) 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2BS4M-YY01 Foshan Nanhai Yangyue Electronics 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, established pursuant to § 1.50002 of reference chapter, as an entity producing “covered” communication equipment. The equipment for which authorization is sought is not “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List that prohibited from receiving an equipment authorization pursuant to section § 2.903 of the FCC rules. Sincerely yours, Applicant Signature Printed Name:Zheng kun sheng Title: Manager Address: Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China Tel.: 18928969218 Email: [email protected]

1 | P a g e Foshan Nanhai Yangyue Electronics Co., Ltd (Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China) Attestation Statements To: Federal Communications Commission Date: (2025/11/27) 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: [2BS4M-YY01] Product Name: [Wireless Bluetooth headset with headband] This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Applicant Signature Printed Name:Zheng kun sheng Title: Manager Address: Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☒ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☒ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

Foshan Nanhai Yangyue Electronics Co., Ltd (Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China) (2025/11/27) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2BS4M-YY01 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request permanent confidential treatment of the exhibits accompanying this certification application as outlined below :  Block Diagram  Schematics  Operational Description The above exhibits contain trade secrets and/or proprietary information that are not publicly available and materials that the Applicant has spent considerable efforts in developing. Public disclosure of these may be harmful to the Applicant and give an unfair advantage to competitors on the market. Sincerely, (Signature) Title: Manager Address: Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China Tel.: 18928969218 Email: [email protected]

Foshan Nanhai Yangyue Electronics Co., Ltd (Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China) (2025/12/30) Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BS4M-YY01 I, the undersigned, hereby authorize (Shenzhen STS Test Services Co., Ltd.) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (Shenzhen STS Test Services Co., Ltd.) shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with (Foshan Nanhai Yangyue Electronics Co., Ltd). We 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, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, (Signature) (Full name of contact person listed on FCC’s website):Zheng kun sheng (Title): Manager Tel: 18928969218 Fax: / Email: [email protected]

Page 1 of 8 FCC ID: 2BS4M-YY01 External Photos Page 2 of 8 FCC ID: 2BS4M-YY01 Page 3 of 8 FCC ID: 2BS4M-YY01 Page 4 of 8 FCC ID: 2BS4M-YY01

Location： Label FCC ID: 2BS4M-YY01

Page 5 of 8 FCC ID: 2BS4M-YY01 Internal Photos Antenna Page 6 of 8 FCC ID: 2BS4M-YY01 Page 7 of 8 FCC ID: 2BS4M-YY01 Page 8 of 8 FCC ID: 2BS4M-YY01

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.: STS2512371H01 Issued for Foshan Nanhai Yangyue Electronics Co., Ltd Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China Product Name: Wireless Bluetooth headset with headband Brand Name: N/A Model Name: YY01 Series Model(s): N/A FCC ID: 2BS4M-YY01 Test Standards: FCC 47CFR §2.1093 Page 2 of 8 Report No.: STS2512371H01 TEST REPORT Applicant’s Name ................. : Foshan Nanhai Yangyue Electronics Co., Ltd Address ................................. : Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China Manufacturer's Name ........... : Dongguan Yinhu Electronics Co., LTD Address ................................. : Room 301, Building 5, No. 49, Fenghuang 2nd Road, Humen Town, Dongguan City, Guangdong Province, China Product Description Product Name ........................ : Wireless Bluetooth headset with headband Brand Name .......................... : N/A Model Name .......................... : YY01 Series Model(s) ...................... : N/A Test Standards ..................... : FCC 47CFR §2.1093 447498 D01 Interim General RF Exposure Guidance v06 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 13 Dec. 2025 Date (s) of performance of tests ............. : 13 Dec. 2025 to 18 Dec. 2025 Date of Issue .......................................... : 18 Dec. 2025 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 8 Report No.: STS2512371H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 8 Page 4 of 8 Report No.: STS2512371H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 18 Dec. 2025 STS2512371H01 ALL Initial Issue Page 5 of 8 Report No.: STS2512371H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name Wireless Bluetooth headset with headband Brand Name N/A Model Name YY01 Series Model(s) N/A Model Difference N/A Product Description The EUT is Wireless Bluetooth headset with headband Operation Frequency: 2402 – 2480 MHz Modulation Type: GFSK(1Mbps), π/4-DQPSK(2Mbps) Antenna Type: PCB Antenna Gain (dBi) 1.68dBi Power Rating Input: DC 5V Adapter N/A Battery DC 3.7V Hardware Version N/A Software Version N/A 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 8 Report No.: STS2512371H01 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in KDB 447498 D01 General RF Exposure Guidance v06 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. Page 7 of 8 Report No.: STS2512371H01 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 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 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 is applied to determine SAR test exclusion. Page 8 of 8 Report No.: STS2512371H01 2.3 TEST RESULT Maximum measured transmitter power. Worst Case Mode frequency Maximum Output Power Tune up tolerance Max Tune up GHz dBm dBm dBm π/4-DQPSK 2.480 1.20 1±1 2 Evaluation Result Mode Frequency Antenna Distance RF output power including tune up (dBm) SAR Test Exclusion Threshold SAR Test Exclusion Estimated SAR GHz mm dBm mw π/4-DQPSK 2.480 5 2 1.585 0.495 Yes / Note: 1. Remark: The worst case gain of the antenna is 1.68dBi. 2. Threshold at which no SAR required is 0.495≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. ※※※※※END OF THE REPORT※※※※※

Antenna describe Antenna plate PCB antenna Model Name 2.4G ANT Center Frequency Peak AVG 2400MHz 2450MHz 2500MHz 2400MHz 2450MHz 2500MHz 1.351.681.11-0.48-3.84-2.99 MAX. Gain -0.58dB Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Antenna Photo & Length (mm) Manufacturer: Zhuhai Jieli Technology technology Co.,Ltd Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div F requency (MHz) Gain(dB) Max Min Avg 2400 1.3537 -22.1424 -0.4794 2450 1.67652 -24.5837 -3.83402 2500 1.11120 -29.5214 -2.99432

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.: STS2512371W01 Issued for Foshan Nanhai Yangyue Electronics Co., Ltd Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China Product Name: Wireless Bluetooth headset with headband Brand Name: N/A Model Name: YY01 Series Model(s): N/A FCC ID: 2BS4M-YY01 Test Standards: FCC Part15.247 Page 2 of 82 Report No.: STS2512371W01 TEST REPORT Applicant’s Name ................. : Foshan Nanhai Yangyue Electronics Co., Ltd Address ................................. : Room 1712, Golden Yueheng Bldg, No.18 Haiba E Rd, Guicheng, Nanhai, Foshan, Guangdong, China Manufacturer's Name .......... : Dongguan Yinhu Electronics Co., LTD Address ................................. : Room 301, Building 5, No. 49, Fenghuang 2nd Road, Humen Town, Dongguan City, Guangdong Province, China Product Description Product Name........................ : Wireless Bluetooth headset with headband Brand Name .......................... : N/A Model Name .......................... : YY01 Series Model(s) .................... : N/A Standards ............................. : FCC Part15.247 Test Procedure ...................... : ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ............................... : Date of receipt of test item ......... : 13 Dec. 2025 Date (s) of performance of tests . : 13 Dec. 2025 to 18 Dec. 2025 Date of Issue .............................. : 18 Dec. 2025 Test Result.................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 82 Report No.: STS2512371W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 11 2.5 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 12 2.6 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 13 2.7 EQUIPMENTS LIST 14 3. EMC EMISSION TEST 15 3.1 CONDUCTED EMISSION MEASUREMENT 15 3.2 RADIATED EMISSION MEASUREMENT 19 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 31 4.1 LIMIT 31 4.2 TEST PROCEDURE 31 4.3 TEST SETUP 32 4.4 EUT OPERATION CONDITIONS 32 4.5 TEST RESULTS 32 5. NUMBER OF HOPPING CHANNEL 33 5.1 LIMIT 33 5.2 TEST PROCEDURE 33 5.3 TEST SETUP 33 5.4 EUT OPERATION CONDITIONS 33 5.5 TEST RESULTS 33 6. AVERAGE TIME OF OCCUPANCY 34 6.1 LIMIT 34 6.2 TEST PROCEDURE 34 6.3 TEST SETUP 34 6.4 EUT OPERATION CONDITIONS 34 6.5 TEST RESULTS 34 7. HOPPING CHANNEL SEPARATION MEASUREMEN 35 7.1 LIMIT 35 Page 4 of 82 Report No.: STS2512371W01 Table of Contents Page 7.2 TEST PROCEDURE 35 7.3 TEST SETUP 35 7.4 EUT OPERATION CONDITIONS 35 7.5 TEST RESULTS 35 8. BANDWIDTH TEST 36 8.1 LIMIT 36 8.2 TEST PROCEDURE 36 8.3 TEST SETUP 36 8.4 EUT OPERATION CONDITIONS 36 8.5 TEST RESULTS 36 9. OUTPUT POWER TEST 37 9.1 LIMIT 37 9.2 TEST PROCEDURE 37 9.3 TEST SETUP 38 9.4 EUT OPERATION CONDITIONS 38 9.5 TEST RESULTS 38 10. ANTENNA REQUIREMENT 39 10.1 STANDARD REQUIREMENT 39 10.2 EUT ANTENNA 39 APPENDIX 1-TEST DATA 40 DWELL TIME 40 MAXIMUM PEAK CONDUCTED OUTPUT POWER 47 -20DB BANDWIDTH 51 OCCUPIED CHANNEL BANDWIDTH 55 CARRIER FREQUENCIES SEPARATION 59 NUMBER OF HOPPING CHANNEL 63 BAND EDGE 65 BAND EDGE(HOPPING) 70 CONDUCTED RF SPURIOUS EMISSION 75 APPENDIX 2-PHOTOS OF TEST SETUP 82 Page 5 of 82 Report No.: STS2512371W01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 18 Dec. 2025 STS2512371W01 ALL Initial Issue Page 6 of 82 Report No.: STS2512371W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- Note: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Page 7 of 82 Report No.: STS2512371W01 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.751dB 2 Unwanted Emissions, conducted ±2.888dB 3 All emissions, radiated 9K-30MHz ±2.48dB 4 All emissions, radiated 30M-1GHz ±2.52dB 5 All emissions, radiated 1G-18GHz ±3.48dB 6 All emissions, radiated>18GHz ±4.18dB 7 Conducted Emission (9KHz-150KHz) ±2.48dB 8 Conducted Emission (150KHz-30MHz) ±2.52dB 9 Occupied Channel Bandwidth ±3.6% 10 Du…

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Page 1 of 2 FCC ID: 2BS4M-YY01 Conducted emissions 30MHz-1GHz Page 2 of 2 FCC ID: 2BS4M-YY01 Spurious emissions