2AKI8-23BV09Dopamine Series Wireless Headset

TOPWAY EM ENTERPRISE LTD. 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China D ate: 2024-03-27 F ederal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 R ef: Attestation Statements Part 2.911(d) (5) (i) Filing SUBJECT: FCC Application for FCC ID: 2AKI8-23BV09 T o Whom It May Concern: TOPWAY EM ENTERPRISE LTD. 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. S incerely, Signatory [ZHUANG LIANG, Manager]

TOPWAY EM ENTERPRISE LTD. 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China D ate: 2024-03-27 F ederal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA R ef: Attestation Statements Part 2.911(d) (5) (ii) Filing SUBJECT: FCC Application for FCC ID: 2AKI8-23BV09 T o Whom It May Concern: TOPWAY EM ENTERPRISE LTD. 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. S incerely, S ignatory [ZHUANG LIANG, Manager]

TOPW A Y EM ENTERPRISE LTD. . -?f. .?.�9.G�. �.?.lJI.�J? 爪9_�B AONE NG S & T PARK, L O NG HU A , S HE N ZH E N GD, China ．．．．．．．．．．．．．．．．．．．．．．．．．．．一．． ．．．－－． ．．．．．．．一．．．．．．一一·一．．．．．一 ·一．．．．．．．．．．一．．一一一·- ------- Date: 2024-03-27 Federal Communications Commission Authorization and Evaluation D ivision 7435 Oakland Mills Road Columbia, MD 21046 U SA FCC ID: 2AKl8-23BV09 Applicant FRN: 0026083352 US Agent -Attestation Statement/ Part 2.911 (d)(7) TOPWAY EM ENTERPRISE LTD. certifies that, as of 2024-03-19, we have designated Cleveland International Trade Agency to accept seNice of process on our behalf for FCC ID: 2AKl8-23BV09. TOPWA Y EM ENTERPRISE LTD., accepts to maintain an agent of service of process in the U nited States for no less than one year after either the grantee has permanently terminated all m arketing and imp ortation 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. Cleveland International Trade Agency, accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of TOPWA Y EM ENTERPRISE LTD. for FCC ID: 2AKl8-23BV09. D esignated Agent Information: Company Name: C leveland International Trade Agency U.S. Agent FRN: 0033401837 Address: 4033 St Clair Ave, Cleveland, OH 44103, USA C ontact Person: Becky Deng P hone: (216) 600-0606 Email: [email protected] Sincerely, Company: TOPWA Y EM ENTERPRISE LTD. Designated Agent: Cleveland International Trade Agency Company Representative: ZHUANG LIANG Designated Agent Representative: Becky Deng Signature: 产／ Signature婷吟歹

TOPWAY EM ENTERPRISE LTD. 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China Date: 2024-03-27 F EDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 S UBJECT: FCC Application for FCC ID: 2AKI8-23BV09 Confidentiality Request T o whom it may concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. ☒ Block Diagram ☐ Tune-Up Information ☒ Operational Description ☐ S ecurity Information ☒ Schematics ☐ Software Defined Radio (SDR) Information ☐ Parts List T he 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. In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); ☐ External Photos ☐ Test Setup Photos ☐ Internal Photos ☐ User Manual ☐F or 45 days, pursuant to Public Notice DA 04-1705. or ☐F or 180 days pursuant to KDB 726920 D01. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. S incerely, S ignatory [ZHUANG LIANG, Manager]

TOPWAY EM ENTERPRISE LTD. 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China Date: 2024-03-27 F EDERAL COMMUNICATIONS COMMISSION AUTHORIZATION AND EVALUATION DIVISION 7435 OAKLAND MILLS ROAD COLUMBIA, MD 21046 S UBJECT: FCC Application for FCC ID: 2AKI8-23BV09 POWER OF ATTORNEY T o Whom It May Concern: W e, the undersigned, hereby authorize Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group (Shenzhen) Co., Ltd. Jandy So on our behalf shall have the same effect as acts of our own. T his is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, TOPWAY EM ENTERPRISE LTD. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. S incerely, S ignatory [ZHUANG LIANG, Manager]

TOPWAY EM ENTERPRISE LTD. 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China D ate: 2024-03-27 F ederal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 S UBJECT: FCC Application for FCC ID: 2AKI8-23BV09 To Whom It May Concern: I , the undersigned, hereby states 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, and will apply the Supplier's Declaration of Conformity procedure to the class B device. I understand the following FCC requirements: 1. D evices subject to the SDoC procedure are required to be tested to show compliance with the FCC technical regulations by a recognized accredited testing laboratory. The testing laboratory must be accredited by a Commission approved accreditation body or designated under the terms of a gov ernment-to-government Mutual Recognition Agreement (MRA). A listing of those accredited testing laboratories that have been recognized by the Commission is published on the FCC Webpage: https://apps.fcc.gov/oetcf/eas/reports/TestFirmSearch.cfm (Select the "accredited" option to search for FCC recognized accredited test firms.) 2.Pt 2.1077 contains the list of information that must be included in the Supplier's Declaration of Conformity, which must be supplied with each product sold. The SDoC compliance info shall be included in the User’s Manual or as a separate sheet. The info must contain the name, address, and phone number of the responsible party, which must be located within the United States. According to 2.909(b), the responsible party is either the Manufacturer or if the product is imported the Importer. S incerely, S ignatory [ZHUANG LIANG, Manager]

Reference No.: WTX20X04017157W Page 2 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 2 - EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 Reference No.: WTX20X04017157W Page 3 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 3 EUT View 4 Reference No.: WTX20X04017157W Page 4 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 5 EUT View 6 Reference No.: WTX20X04017157W Page 5 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EUT View 7

Reference No.: WTX20X04017157W Page 1 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn ANNEX EXHIBIT 1 - PRODUCT LABELING Proposed FCC ID Label Format FCC ID: 2AKI8-23BV09 Specifications: The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime. Proposed Label Location on EUT FCC ID Label Location

Reference No.: WTX20X04017157W Page 6 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 3 - EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 Solder Board-Component View 1 Reference No.: WTX20X04017157W Page 7 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Solder Board-Component View 2 Solder Board-Component View 3 Reference No.: WTX20X04017157W Page 8 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Antenna View BT Antenna

1. RF Exposure Requirements 1.1 General Information Client Information Applicant: TOPWAY EM ENTERPRISE LTD. Address of applicant: 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China Manufacturer: Shen Zhen Audio EM Electronic Co., Ltd. Address of manufacturer: No.3, Zhugaotang Road, No.9 Building, Dahuang Industrial Zone, Shenzhen City, Guangdong Province,China General Description of EUT: Product Name: Dopamine Series Wireless Headset Trade Name / Model No.: 23BV09 Adding Model(s): 6942269597232, 6942269597249, 6942269597256 Rated Voltage: Type-C Port:DC5V Battery:DC3.7V Battery Capacity: 150mAh Adapter Model: / FCC ID: 2AKI8-23BV09 Equipment Type: Portable device Technical Characteristics of EUT: Bluetooth Bluetooth Version: V5.3(BR/EDR mode) Frequency Range: 2402-2480MHz RF Output Power: 2.91dBm (Conducted) Data Rate: 1Mbps, 2Mbps, 3Mbps Modulation: GFSK, π/4 DQPSK, 8DPSK Quantity of Channels: 79 Channel Separation: 1MHz Type of Antenna: PCB Antenna Antenna Gain: -3dBi 1.2 RF Exposure Exemption According to §1.1307(b)(3) and KDB 447498 D04 Interim General RF Exposure Guidance v01, system operating under the provisions of this section shall be operating in a manner that the public is not exposed to radio frequency energy level in excess limit for maximum permissible exposure. Option A: FCC Rule Part 1.1307 (b)(3)(i)(A):The available maximum time-averaged power is no more than 1mW, regardless of separation distance. Option B: FCC Rule Part 1.1307 (b)(3)(i)(B): The available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold P th (mW) described in the following formula. P th is given by: Option C: FCC Rule Part 1.1307 (b)(3)(i)(C): The minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. R must be at least λ/2π, where λ is the free-space operating wavelength in meters. Single RF Sources Subject to Routine Environmental Evaluation RF Source frequency (MHz) Threshold ERP (watts) 0.3-1.34 1,920 R 2 1.34-30 3,450 R 2 /f 2 30-300 3.83 R 2 300-1,500 0.0128 R 2 f 1,500-100,000 19.2R 2 For Multiple RF sources: FCC Rule Part 1.1307(b)(3)(ii): (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating structure operating and the nearest portion of any other radiating structure in the same device, except if the sum of multiple sources is less than 1 mW during the time-averaging period, in which case they may be treated as a single source (separation is not required). (B) In the case of fixed RF sources operating in the same time-averaging period, or of multiple mobile or portable RF sources within a device operating in the same time averaging period, if the sum of the fractional contributions to the applicable thresholds is less than or equal to 1 as indicated in the following equation. 1.3 Calculated Result Radio Access Technology Prediction Frequency Output Power Antenna Gain Duty Cycle Tune-Up Time-Averaged Power ERP (MHz) (dBm) (dBi) (%) (dBm) (dBm) Bluetooth 2402 2.91 -3 100 3.00 -2.15 Frequency Option Min. Distance Max. Power Exposure Limit Ratio Result (MHz) (cm) (dBm) (mW) (mW) Pass/Fail 2402 B 0.5 3.00 2.00 2.788 0.72 Pass Note: 1. Time-Averaged Power=Output Power * Duty Cycle; ERP= Time-Averaged Power+ Antenna gain-2.15dB 2. Option A, B and C refers as clause 1.2. 3. For option B, Max (time-averaged power, effective radiated power (ERP)) converts to Max. Power. For option C, ERP converts to Max. Power; 4. For option B, P th (mW) converts to Exposure Limit (mW); For option C, ERP (W) converts to Exposure Limit (mW). 5. Ratio= Tune-Up ERP (mW)/ Exposure Limit (mW) Mode for Simultaneous Multi-band Transmission: Radio Access Technology Ratio 1 Ratio 2 Simultaneous Ratio Limit Result Pass/Fail -- -- -- -- -- -- Result: Pass

1.ElectricalCharacteristics ManufacturerTopwayEM Enterprise Ltd. Address8F., Block B, Building 6, BaonengScience and technology park, QingxiangRD.,QinghuIndustrial Park, LonghuaNew District, Shenzhen, China 518109 Type of antenna PCB Antenna No.ItemSpecifications 1Frequenc Range2400 ~2500MHz 2Band Width100MHz typ. 3 peakGain -3dBi 4V.S .W.R≤2.0 5PolarizationLinear 6Azimuth BeamwidthOmni-directional 7Impedance50Ω All the technical data and information contained herein are subject to change without priornotice unt1t1ea - wea uec 11 11:J�:j�LUI� 3.Retum Loss 4.Radiation Pattern 3D Radiation Pattern Frequency (MHz) 240024502500 Peak Gain (dBi) -6.82 -5.3-3 Efficiency (%) 20.8129.5250.16

Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 1 of 64 TEST REPORT Reference No. ....................: WTX24X03045369W FCC ID ............................... .: 2AKI8-23BV09 Applicant .......................... .: TOPWAY EM ENTERPRISE LTD. Address ............................ .: 8F BLOCK B BUILDING 6 BAONENG S & T PARK, LONG HUA, SHENZHEN GD, China Manufacturer .................... .: Shen Zhen Audio EM Electronic Co., Ltd. Address ............................ .: No.3, Zhugaotang Road, No.9 Building, Dahuang Industrial Zone, Shenzhen City, Guangdong Province,China Product Name .................. .: Dopamine Series Wireless Headset Model No... ........................ .: 23BV09 Standards ......................... .: FCC Part 15.247 Date of Receipt sample ... .: 2024-03-08 Date of Test....................... .: 2024-03-08 to 2024-03-26 Date of Issue .................... .: 2024-03-26 Test Report Form No. ...... . : WTX_Part 15_247W Test Result ........................ .: Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of approver. Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. Address: 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Email: [email protected] Tested by: Approved by: Mike Shi Jason Su Reference No.: WTX24X03045369W Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Page 2 of 64 TABLE OF CONTENTS 1. GENERAL INFORMATION .................................................................................................................................... 5 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ......................................................................... 5 1.2 TEST STANDARDS ................................................................................................................................................. 6 1.3 TEST METHODOLOGY ........................................................................................................................................... 6 1.4 TEST FACILITY ...................................................................................................................................................... 6 1.5 EUT SETUP AND TEST MODE .............................................................................................................................. 7 1.6 MEASUREMENT UNCERTAINTY ............................................................................................................................. 9 1.7 TEST EQUIPMENT LIST AND DETAILS ................................................................................................................. 10 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 13 3. ANTENNA REQUIREMENT ................................................................................................................................. 14 3.1 STANDARD APPLICABLE ..................................................................................................................................... 14 3.2 EVALUATION INFORMATION ................................................................................................................................ 14 4. FREQUENCY HOPPING SYSTEM REQUIREMENTS .................................................................................... 15 4.1 STANDARD APPLICABLE ..................................................................................................................................... 15 4.2 FREQUENCY HOPPING SYSTEM ......................................................................................................................... 15 4.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................................................... 16 5. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION .................................................... 17 5.1 STANDARD APPLICABLE ..................................................................................................................................... 17 5.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 17 5.3 TEST PROCEDURE .............................................................................................................................................. 17 5.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 18 6. DWELL TIME OF HOPPING CHANNEL ........................................................................................................... 19 6.1 STANDARD APPLICABLE ..................................................................................................................................... 19 6.2 TEST SETUP BLOCK DIAGRAM ........................................................................................................................... 19 6.3 TEST PROCEDURE .............................................................................................................................................. 19 6.4 SUMMARY OF TEST RESULTS/PLOTS ................................................................................................................. 20 7. 20DB BANDWIDTH ............................................................................................................................................... 21 7.1 STANDARD APPLICABLE ...................................................................................................…

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Reference No.: WTX20X04017157W Page 9 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn EXHIBIT 4 - TEST SETUP PHOTOGRAPHS Conducted Emission Test Setup Radiation Emission Test Setup (Below 30MHz) Reference No.: WTX20X04017157W Page 10 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Radiation Emission Test Setup (30MHz to 1GHz) Radiation Emission Test Setup (1GHz to 18GHz) Reference No.: WTX20X04017157W Page 11 of 11 Waltek Testing Group (Shenzhen) Co., Ltd. Http://www.waltek.com.cn Radiation Emission Test Setup (Above 18GHz) ***** END OF REPORT *****