2BFF6-NX200Wireless Bluetooth earphones

This device complieswith part 15 of the FCC Rules. Operationis subjectto the followingtwo conditions:(1) This device may not cause harmfulinterference,and (2) this device must accept any interferencereceived,includinginterferencethat may cause undesiredoperation. FCC warning: Any Changesor modificationsnot expresslyapprovedby the party responsiblefor compliancecould void the user's authorityto operatethe equipment. Note: This equipmenthas been tested and found to complywith the limits for a Class B digital device,pursuantto part 15 of the FCC Rules. These limits are designedto providereasonableprotection againstharmfulinterferencein a residentialinstallation.This equipmentgeneratesuses and can radiateradio frequencyenergyand, if not installedand used in accordancewith the instructions,may cause harmfulinterferenceto radio communications.However,there is no guaranteethat interferencewill not occur in a particularinstallation.If this equipmentdoes cause harmfulinterferenceto radio or televisionreception,which can be determinedby turningthe equipmentoff and on, the user is encouragedto try to correctthe interferenceby one or more of the followingmeasures: -Reorientor relocatethe receivingantenna. -Increasethe separationbetweenthe equipmentand receiver. -Connectthe equipmentinto an outlet on a circuit differentfrom that to which the receiveris connected. -Consultthe dealer or an experiencedradio/TVtechnicianfor help. The device has been evaluatedto meet generalRF exposurerequirement.The device can be used in portableexposureconditionwithoutrestriction. This device complieswith part 15 of the FCC Rules. Operationis subjectto the followingtwo conditions:(1) This device may not cause harmfulinterference,and (2) this device must accept any interferencereceived,includinginterferencethat may cause undesiredoperation.

DongGuan NIA Acoustic Technology Co., Ltd 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – EquipmentType Company name: DongGuan NIA Acoustic Technology Co., Ltd Address: NO.3 Xinghugongye2jie qiaolonglu qiaotou town dongguan city China Product Name: Wireless Bluetooth earphones FCCID: 2BFF6-NX200 Model(s): NX200, Q9, Q9M ,Q10,NX200, NX300, NX400, NX500 ,NX500M, NX600SP, WH990SP,NX700, NX800, NX900, WH280, Q118 2.911(d)(5)(i) EquipmentType We, [DongGuan NIA Acoustic Technology Co., Ltd] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: jie Zhong Date: 2024/03/29 Title and Company name: Sales manager/ DongGuan NIA Acoustic Technology Co., Ltd NOTE 1 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

DongGuan NIA Acoustic Technology Co., Ltd 2.911 (d)(5)(ii) Applicant Attestation v1.2 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: DongGuan NIA Acoustic Technology Co., Ltd Address: NO.3 Xinghugongye2jie qiaolonglu qiaotou town dongguan city China Product Name: Wireless Bluetooth earphones FCCID: 2BFF6-NX200 Model(s): NX200, Q9, Q9M ,Q10,NX200, NX300, NX400, NX500 ,NX500M, NX600SP, WH990SP,NX700, NX800, NX900, WH280, Q118 2.911(d)(5)(ii) Applicant filing We, [DongGuan NIA Acoustic Technology Co., Ltd] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter,as an entity producing coveredcommunications equipment. Yours sincerely, Name: jie Zhong Date: 2024/03/29 Title and Company name: Sales manager/ DongGuan NIA Acoustic Technology Co., Ltd NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the DongGuan NIA Acoustic Technology Co., Ltd 2.911 (d)(5)(ii) Applicant Attestation v1.2

Declaration on model difference The following models of units we produce are identical in electrical, mechanical and physical structure; The only difference is the model name. The test model is NX200, and the test results are applicable to other tests Production name Trade name Model no. Wireless Bluetooth earphones N/A NX200, Q9, Q9M ,Q10,NX200, NX300, NX400, NX500 ,NX500M, NX600SP, WH990SP,NX700, NX800, NX900, WH280, Q118 Confirmed by：DongGuan NIA Acoustic Technology Co., Ltd Signature: Date: 2024/03/29 Name: jie Zhong Title: Sales manager Company: DongGuan NIA Acoustic Technology Co., Ltd

DongGuan NIA Acoustic Technology Co., Ltd 2024.03.29 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR Product Name: Wireless Bluetooth earphones FCCID: 2BFF6-NX200 Model(s): NX200, Q9, Q9M ,Q10,NX200, NX300, NX400, NX500 ,NX500M, NX600SP, WH990SP,NX700, NX800, NX900, WH280, Q118 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : jie Zhong/Sales manager Contact information / address: NO.3 Xinghugongye2jie qiaolonglu qiaotou town dongguan city China

DongGuan NIA Acoustic Technology Co., Ltd 2024.03.29 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION Product Name: Wireless Bluetooth earphones FCCID: 2BFF6-NX200 Model(s): NX200, Q9, Q9M ,Q10,NX200, NX300, NX400, NX500 ,NX500M, NX600SP, WH990SP,NX700, NX800, NX900, WH280, Q118 To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd 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). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : jie Zhong / Sales manager Contact information / address: NO.3 Xinghugongye2jie qiaolonglu qiaotou town dongguan city China

External Photos

Size:40*40mm Model : NX200 FCC ID: 2BFF6-NX200 This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. Label location

Internal Photos BT TNA

FCC ID: 2BFF6-NX200 RF exposure evaluation According to§15.247(i), §1.1307 (b) and KDB447498, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The SAR-based exemption formula of §1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). F is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate Antenna gain: 1.68 dBi Conducted Transmit Power Max: = 1.10dBm = 1.29 mW EIRP=1.29dBm+1.68dBi=2.97dBm ERP=2.97-2.15dB= 0.82dBm The maximun ERP power specified is 0.82dBm =1.21mW The source- based time-averaging conducted output power =1.21 * Duty factor mW (where Duty Factor≤1) = 1.21 mW The SAR Exclusion Threshold Level: 푃 th (mW) = ERP 20cm * (푑/20cm) 푥 (X= ) = 2.72 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing.

No.：BCTC/RF-EMC-005 Page: 1 of 84 Edition：B.1 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2403789071E Applicant: DongGuan NIA Acoustic Technology Co., Ltd Product Name: Wireless Bluetooth earphones Test Model: NX200 Tested Date: 2024-03-06 to 2024-03-13 Issued Date: 2024-04-07 Report No.: BCTC2403789071E No.：BCTC/RF-EMC-005 Page: 2 of 84 Edition：B.1 FCC ID: 2BFF6-NX200 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Wireless Bluetooth earphones Trademark: NIA Model/Type Reference: NX200, Q9, Q9M ,Q10,NX200, NX300, NX400, NX500 ,NX500M, NX600SP, WH990SP,NX700, NX800, NX900, WH280, Q118 Prepared For: DongGuan NIA Acoustic Technology Co., Ltd Address: NO.3 Xinghugongye2jie qiaolonglu qiaotou town dongguan city China Manufacturer: DongGuan NIA Acoustic Technology Co., Ltd Address: NO.3 Xinghugongye2jie qiaolonglu qiaotou town dongguan city China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China. Sample Received Date: 2024-03-06 Sample Tested Date: 2024-03-06 to 2024-03-13 Report No.: BCTC2403789071E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Brave Zeng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2403789071E No.：BCTC/RF-EMC-005 Page: 3 of 84 Edition：B.1 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 13 6.3 Test procedure .................................................................................................... 13 6.4 EUT operating Conditions ................................................................................... 13 6.5 Test Result .......................................................................................................... 14 7. Radiated emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test procedure .................................................................................................... 18 7.4 EUT operating Conditions ................................................................................... 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 25 8.1 Block Diagram Of Test Setup .............................................................................. 25 8.2 Limit .................................................................................................................... 25 8.3 Test procedure .................................................................................................... 26 8.4 EUT operating Conditions ................................................................................... 26 8.5 Test Result .......................................................................................................... 27 9. Spurious RF Conducted Emissions ..................................................................... 28 9.1 Block Diagram Of Test Setup .............................................................................. 28 9.2 Limit .................................................................................................................... 28 9.3 Test procedure .................................................................................................... 28 9.4 Test Result .....................................…

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TEST SETUP PHOTOGRAPHS 1.1. Photos of Radiation Emission Measurement Conducted emissions Radiated Measurement Photos ----------------The end----------------