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Dongguan Heng Da Rui Electronic Technology Co., Ltd Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Attestation Statements Not Covered Entity Applicant & Not Covered Equipment To: Federal Communications Commission Date: Dec. 30, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) & (ii) FCC ID: 2A58W-M8 Dongguan Heng Da Rui Electronic 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, 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: Ping Luo Title:Manager Address: Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Tel.: 13670287893 Email: [email protected]

1 | P a g e Dongguan Heng Da Rui Electronic Technology Co., Ltd Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Attestation Statements To: Federal Communications Commission Date: Dec. 30, 25 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: [2A58W-M8] Product Name: [Wireless bluetooth headset] 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: Printed Name: Ping Luo Title: Manager Address: Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Tel.: 13670287893 Email: [email protected] 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) ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

Dongguan Heng Da Rui Electronic Technology Co., Ltd Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: Dec. 30, 25 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: [2A58W-M8] [Dongguan Heng Da Rui Electronic Technology Co., Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, [AOGES CO., 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. [AOGES CO., 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:AOGES CO., LIMITED FRN:0033947847 Address:1624 Market St., Ste 226, #30327 Denver CO, 80202 US Signature: Contact Person: XIAOYAN LAI Tel:303 623 1940 Email: [email protected] Applicant Company Name: Dongguan Heng Da Rui Electronic Technology Co., Ltd. FRN: 0037785706 Address: Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Signature: Contact Person: Ping Luo Tel: 13670287893 Email: [email protected]

Dongguan Heng Da Rui Electronic Technology Co., Ltd Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China 12/30/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request for: FCC ID: 2A58W-M8 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) Printed Name: Ping Luo Title:Manager Address: Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Tel.: 13670287893 Email: [email protected]

Dongguan Heng Da Rui Electronic Technology Co., Ltd Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Date: Dec. 30, 25 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2A58W-M8 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 (Dongguan Heng Da Rui Electronic Technology 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, Applicant Signature: Printed Name: Ping Luo Title: Manager Address: Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Tel.: 13670287893 Email: [email protected]

Page 1 of 8 ReportNo.:STS2510212 APPENDIX-PHOTOGRAPHSOFEUTCONSTRUCTIONALDETAILS Photo1 Photo2 Page 2 of 8 ReportNo.:STS2510212 Photo3 Photo4 Page 3 of 8 ReportNo.:STS2510212 Photo5 Photo6 Page 4 of 8 ReportNo.:STS2510212 Photo7 Photo8 Page 5 of 8 ReportNo.:STS2510212 Photo9 Photo10 Page 6 of 8 ReportNo.:STS2510212 Photo11 Photo12 Page 7 of 8 ReportNo.:STS2510212 Photo13 Photo14 Page 8 of 8 ReportNo.:STS2510212 Photo15 Photo16

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below: User Manual: Package:

Page 1 of 4 ReportNo.:STS2510212 APPENDIX-PHOTOGRAPHSOFEUTCONSTRUCTIONALDETAILS Photo1 Photo2 Antenna Page 2 of 4 ReportNo.:STS2510212 Photo3 Photo4 Page 3 of 4 ReportNo.:STS2510212 Photo5 Photo6 Page 4 of 4 ReportNo.:STS2510212 Photo7

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.:STS2510212H01 Issued for Dongguan Heng Da Rui Electronic Technology Co., Ltd. Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Product Name: Wireless bluetooth headset Brand Name: MISHUAI Model Name: M8 Series Model(s): N/A FCC ID: 2A58W-M8 Test Standards: FCC 47CFR §2.1093 Page 2 of 8 Report No.: STS2510212H01 TEST REPORT Applicant’s Name ................. : Dongguan Heng Da Rui Electronic Technology Co., Ltd. Address .................................. : Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Manufacturer's Name .......... : Dongguan Heng Da Rui Electronic Technology Co., Ltd. Address .................................. : Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Product Description Product Name ........................ : Wireless bluetooth headset Brand Name ........................... : MISHUAI Model Name........................... : M8 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 ...................... : 31 Oct. 2025 Date (s) of performance of tests.............. : 31 Oct. 2025~20 Nov. 2025 Date of Issue ........................................... : 20 Nov. 2025 Test Result ............................................... : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 8 Report No.: STS2510212H01 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.: STS2510212H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 20 Nov. 2025 STS2510212H01 ALL Initial Issue Page 5 of 8 Report No.: STS2510212H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name Wireless bluetooth headset Brand Name MISHUAI Model Name M8 Series Model(s) N/A Model Difference N/A Product Description The EUT is Wireless bluetooth headset Operation Frequency: 2402 – 2480 MHz Modulation Type: BT BR(1Mbps): GFSK BT EDR(2Mbps): π/4-DQPSK BT EDR(3Mbps): 8DPSK Antenna gain: 3dBi Antenna Designation: Ceramic Power Rating Input: DC 5V 0.8A Adapter N/A Battery Earphone battery: Model: 501010 Brand: N/A Rated Voltage: 3.7V Charge Limit Voltage: 4.2V Capacity: 40 mAh Charging box: Model:902025 Brand:N/A Rated Voltage:3.7V Charge Limit Voltage:4.2 V Capacity:400 mAh Hardware Version V1.2 Software Version A1.0 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.: STS2510212H01 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.: STS2510212H01 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.: STS2510212H01 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 QPSK(BT-R) 2.441 2.84 3±1 4 QPSK(BT-L) 2.441 3.55 2±1 3 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 QPSK(BT-R) 2.441 5 4 2.512 0.785 Yes / QPSK(BT-L) 2.441 5 3 1.995 0.623 Yes / Note: 1. Remark: The worst case gain of the antenna is 3dBi. 2. Threshold at which no SAR required is 0.785≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. 3. Threshold at which no SAR required is 0.623≤ 3.0 for 1-g SAR, Separation distance ≤ 5mm. ※※※※※END OF THE REPORT※※※※※

深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 1 产品规格承认书 SPECIFICATIONS 客户: CUSTOMER: 产品名称: DESCRIPTION:地磁天线 客户型号: CUSTOMERPARTNO: 产品型号: OURMODELNO:PBX1608MA02 日期: DATE: 确认签字,盖章后请返回承认书一份 PLEASERETURNTOUSONECOPYOF“SPECIFICATIONFORAPPROVAL” WITHYOURAPPROVEDSIGNATURES 核准审核刘飞制作刘小美 客户承认签印 日期 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 2 PBX1608MA02Specification OperatingTemp.:-40°C~+85°C 1. FEATURES : ●Lightweight,compact ●Widebandwidth,lowcost ●Built-inantennawithhighgain 2. APPLICATIONS : ●Bluetooth,WirelessLAN,MobileTV ●HomeRFSystem,etc 3.PRODUCTIDENTIFICATION (1)(2)(3) (1)Producttype:MultilayerchipAntenna (2)CenterFrequency:2450MHz (3)ExternalDimensions(L×W)(mm):1.6*0.8 4.SHAPEANDDIMENSIONS: LWHA 1.6±0.20.8±0.2 0.8 ± 0.20.3 ± 0.1 CH IP45 016 2 08 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 3 ●天线位于PCB板内部或中间位置时（长条式耳机）：（单位：mm） 天线最优放置于中间区域，净空区周围最优需要至少一排过孔。 ●天线位于PCB板边缘位置时（入耳式耳机和部分长条式耳机）： 天线最优放置于PCBA的边缘；天线及其走线设置在单层。 设计标准： 1.图中的尺寸仅作为参考；实际尺寸会根据不同版型进行优化。 2.净空区周围最优需要至少一排过孔，孔径0.3mm，与PCBA上的其它回路或物料进行隔离。 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 4 天线封装方案一（ 3.5mm × 7.5mm） 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 5 天线封装方案二（ 4.5mm × 6mm） 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 6 天线封装方案三（ 1.5mm × 10mm） 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 7 ElectricalCharacteristics CharacteristicCurves 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 8 RadiationPattern 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 9 3DRadiationPattern 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 10 RadiationPattern TheGainpatternismeasuredinFAR-fieldchamber.DUTisplacedonthetableofrotator,a standardhornantennaandVectorNetworkAnalyzerisusedtocollectdata. EnvironmentalCharacteristics (1)ReliabilityTest (2)StorageCondition (a)Atwarehouse: Thetemperatureshouldbewithin0~30°Candhumidityshouldbelessthan60%RH. Theproductshouldbeusedwithin1yearfromthetimeofdelivery. (b)Onboard: Thetemperatureshouldbewithin-40~85°Candhumidityshouldbelessthan85%RH. (3)OperatingTemperatureRange Operatingtemperaturerange:-40 °C to+105 °C . 深圳市朋伴兴业科技有限公司 UNLESSOTHERSPECIFIEDTOLERANCESON： X＝±X.X＝±X.XX＝ ANGLES＝ ± HOLEDIA＝ ± 深圳市朋伴兴业科技有限公司 SCALE：N/AUNIT：mm THESEDRAWINGSANDSPECIFICATIONSARETHEPROPERTYOFPBXY TECHNOLOGYLimitedANDSHALLNOTBEREPRODUCEDORUSEDAS THEBASISFORTHEMANUFACTUREORSALEOFAPPARATUSOR DEVICESWITHOUTPERMISSION DRAWNBY:SeraCHECKEDBY:XD DESIGNEDBY:SeraAPPROVEDBY:XD TITLE：CHIP2450-1608Specification DOCUMENT NO. 1608 SPECREV. P1 11 8.RecommendedReflowSoldering…

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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.:STS2510212W01 Issued for Dongguan Heng Da Rui Electronic Technology Co., Ltd. Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Product Name: Wireless bluetooth headset Brand Name: MISHUAI Model Name: M8 Series Model(s): N/A FCC ID: 2A58W-M8 Test Standards: FCC Part15.247 Page 2 of 157 Report No.: STS2510212W01 TEST REPORT Applicant’s Name ................. : Dongguan Heng Da Rui Electronic Technology Co., Ltd. Address .................................. : Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Manufacturer's Name ........... : Dongguan Heng Da Rui Electronic Technology Co., Ltd. Address .................................. : Room 701, Unit 1, Building 2, No. 58, Humen Zhongxing Road, Humen Town, Dongguan City, Guangdong Province, China Product Description Product Name ........................ : Wireless bluetooth headset Brand Name ........................... : MISHUAI Model Name ........................... : M8 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 .......... : 31 Oct. 2025 Date (s) of performance of tests . : 31 Oct. 2025~20 Nov. 2025 Date of Issue .............................. : 20 Nov. 2025 Test Result .................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 157 Report No.: STS2510212W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 7 1.1 TEST FACTORY 8 1.2 MEASUREMENT UNCERTAINTY 8 2. GENERAL INFORMATION 9 2.2 DESCRIPTION OF THE TEST MODES 11 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 11 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 13 2.5 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 14 2.6 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 15 2.7 EQUIPMENTS LIST 16 3. EMC EMISSION TEST 17 3.1 CONDUCTED EMISSION MEASUREMENT 17 3.2 RADIATED EMISSION MEASUREMENT 21 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 38 4.1 LIMIT 38 4.2 TEST PROCEDURE 38 4.3 TEST SETUP 39 4.4 EUT OPERATION CONDITIONS 39 4.5 TEST RESULTS 39 5. NUMBER OF HOPPIN…

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