2A2BY-SU8TWS Wireless Earbuds

Dongguan Huien Electronic Technology Co., Ltd Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 13, 2024 FCC ID: 2A2BY-SU8 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Dongguan Huien Electronic Technology Co., 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Dongguan Huien Electronic Technology Co., Ltd certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Applicant: Dongguan Huien Electronic Technology Co., Ltd Address: Room 301, Building of 1, No. 429, Changdong Road, Changping Town Dongguan, 523000 China Contact Person: zhangyanfeng Tel.: 86-18123809176 Email: [email protected] Sincerely, Signature:

Dongguan Huien Electronic Technology Co., Ltd U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: 08-12-2024 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2A2BY-SU8 Dongguan Huien Electronic 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 Company Name: Dongguan Huien Electronic Technology Co., Ltd FRN: 0033740663 Address: Room 301, Building of 1, No. 429, Changdong Road, Changping Town Dongguan, 523000 China Signature: Contact Person: zhangyanfeng Tel: 86-18123809176 Email: [email protected]

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Sheet CS -2450-16-C For 2400-2483MH z 1.6x0.8mm [EIA1608] Dongguan Huien Electronic Technology Co., Ltd Room 301, Building of 1, No. 429, Changdong Road, Changping Town Dongguan, 523000 China 典型特征 T y p i cal Characterist i cs ■重量轻，结构紧凑 Light weight, compact ■宽带大，低成本 Wide bandwidth, low cost ■高增益内置天线 Built-in antenna with high gain ■工作温度 Operating Temp. : -40°C~+85°C 电气特性 Electrical Characteristics per line(TA=25°C) 2400~2483 MHz Lin ear 2. 36 dB i 66. 5% % 50 频带 Frequency Band 极 化 P o l a r iz a t i o n * 峰 值 增 益 P e ak Ga i n * 峰 值 效 率 P e a k E ffi c i e n c y 阻 抗 Im p e n da n ce 参数Parameter 规格Specification 单位Units 特征 Feature 应用 Application ■蓝牙,无线局域网,移动电视 Bluetooth, Wireless L AN, Mobile T V ■家用射频系统Home RF system, etc TECHNOLOGY *测 试 条 件 ： 测 试 板 尺 寸 9 8 × 6 5 mm ； 匹 配 电 路 ： π 型 匹 配 电 路 。 T est co n d i t i o n : T e st boa r d s iz e 9 8 * 6 5 m m ; M a t c h in g c i r c u i t: P i m a t c hi n g c ir c u i t w i l l b e re q u i r ed Fi g .1 驻 波 比 V S WR W C S -2450-16-C Chip Antenna 3D 模式 3D Gain Pattern (2400 MHz) 增益模式是在 暗 室 进 行 测 试 的 ， 被 测 件 放 在 桌 肩 位 置 ， 用 标 准 的 喇 叭 天 线 和 矢 量 网 络 分 析 仪 来 收 集 数 据 。 Th e Ga i n p a tt e rn i s measu r ed i n F AR - f i e l d c h a m be r . D U T i s p l aced o n e tab l e o f r o t a t o r , a s t a n da r d h o r n a n t e nn a a n d Vec t o r N e t w o rk t o co l l ect d a t a . 辐射模式 Radiation Pattern Fig.2 暗室示意图 FAR-field Chamber TECHNOLOGY Chip Antenna t h An a l y z e r i s u esd 3D 模式 3D Gain Pattern (2450 MHz) 3D 模式 3D Gain Pattern (2500 MHz) TECHNOLOGY Chip Antenna 1. 30±3 minutes at -40°C±5°C, 2. Convert to +105°C (5 minutes) 3. 30±3 minutes at +105°C±5°C, 4. Convert to -40°C (5 minutes) 5. Total 100 continuous cycles 项目Item 环境Condition 规格Specification 热冲击 Thermal shock No apparent damage Fulfill the electrical spec. after test. 抗湿性 Humidity resistance No apparent damage Fulfill the electrical spec. after test. 1. Humidity: 85% R.H. 2. Temperature: 85±5°C 3. Time: 1000 hours. The dipped surface of the terminal shall be at least 95% covered with solder after dipped in solder bath of 245±5°C for 3±1 seconds. No apparent damage 焊锡性 Solderability 耐焊接热性 Soldering heat resistance No apparent damage 1. Solder bath temperature : 260±5°C 2. Bathing time: 10±1 seconds 低温电阻 Low temperature resistance No apparent damage Fulfill the electrical spec. after test. 1. Temperature: -40°C±5°C 2. Time: 1000 hours. No apparent damage Fulfill the electrical spec. after test. 1. Temperature: 150°C±5°C 2. Time: 1000 hours. 耐高温性 High temperature resistance 推荐回流焊接曲线 Recommended Reflow Solder curve (2)储存环境 Storage Condition (a)仓库：温度应在0～30°C之间，湿度应小于60%湿度，产品应在交货之日起1年内使用。 At warehouse: The temperature should be within 0 ~ 30°C and humidity should be less than 60% RH.The product should be used within 1 year from the time of eliver y. (b)在板：温度应在40～85°C之间，湿度应小于85%湿度。On board: The temperature should be within -40~85°C and humidity should be less than 85% RH. (3)工作环境温度 Operating Temperature Range 工作温度范围：-40°C to +85°C。 Operating temperature range : -40°C to +85°C. TECHNOLOGY Chip Antenna 推荐焊&Evaluation Board (1)电烙铁的使用 Soldering Gun Procedure 以下注意事项仅针对使用电烙铁进行个别器件更换。 Note the follows, in case of using solder gun for replacement. (a)使用小于30W的电烙铁，温度不高于350°C，焊接时间小于3秒。 The tip temperature must be less than 350°C for the period within 3 seconds by using soldering gun under 30 W. (b)烙铁不可直接接触器件本体。 The soldering gun tip shall not touch this product directly. (2)焊锡量 Soldering Volume 注意焊接过程中过多的焊锡量会损害器件本体。 Note that excess of soldering volume will easily get crack the body of this product. 产品尺寸 Product Dimension TECHNOLOGY Chip Antenna 应用环境Application Guide 包装信息Package Information A B C D E F L W 8.00±0.3 3.50± 0.051.75±0.1 2.00±0.054.00±0.1 1.50±0.1 2.30± 0.1 1.55± 0.1 编码规则 Part NumberSystem CS - 2450 - 16-C External DimensionsL*W(mm)1.6*0.8 C entral Frequency2450MHz Product Series: Chip Antenna 丝印 Marking TECHNOLOGY Chip Antenna TECHNOLOGY 订货信息Order Information 设备 Device Package 净重 Net Weight 运送式 Carrier 量 Quantity 认证 HSF Status CS-2450 -16-C 1608 Tape & Reel 5000pcs RoHS compliant 版本信息 Revision histor y 日期/Date 本/Revision 2022-12-2 V1.0 本描述/Description of changes First Version 0.002g The contents of this data sheet are subject to change without notice. Please confirm the specifications and delivery conditions when placing your order. © Copyright 2015, Keweixin Electronics All rights reserved Chip Antenna

Dongguan Huien Electronic Technology Co., Ltd Date: August 12, 2024 Product Model Number: SU8, HE-029A FCC ID: 2A2BY-SU8 To whom it may concern, Re: Product Certification Representative Authorization Letter I, the undersigned, hereby authorize, Shenzhen CCUT Quality Technology Co., Ltd. to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Shenzhen CCUT Quality Technology Co., Ltd. on our behalf shall have the same effects as acts of our own. I, the undersigned, hereby 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 853(a). This authorization is valid until further written notice from the applicant. Signature： By: zhangyanfeng Title: Manager Email: [email protected] Telephone: 86-18123809176 On behalf of: Dongguan Huien Electronic Technology Co., Ltd

Dongguan Huien Electronic Technology Co., Ltd Date: August 12, 2024 Product Model Number: SU8, HE-029A FCC ID: 2A2BY-SU8 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that ORGANIZATION. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by ORGANIZATION. on our behalf shall have the same effect as acts of our own. By: zhangyanfeng Contact Listed on FCC Wesbite Title: Manager Email: [email protected] Telephone: 86-18123809176 On behalf of: Dongguan Huien Electronic Technology Co., Ltd

Dongguan Huien Electronic Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 12, 2024 Subject; Request for Confidentiality FCC ID: 2A2BY-SU8 To 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. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices 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 For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: zhangyanfeng Title: Manager

Dongguan Huien Electronic Technology Co., Ltd Model Difference Statement Dear Sir/Madam, Added models HE-029A basis of the original product SU8. 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: zhangyanfeng Title: Manager Company name: Dongguan Huien Electronic Technology Co., Ltd Address: Room 301, Building of 1, No. 429, Changdong Road, Changping Town Dongguan, 523000 China

Report No: SSP24070381-1E FCC ID: 2A2BY-SU8 Annex of Test Report Annex A. EUT External Photos EUT View 1 EUT View 2 Report No: SSP24070381-1E FCC ID: 2A2BY-SU8 Annex of Test Report EUT View 3 EUT View 4 Report No: SSP24070381-1E FCC ID: 2A2BY-SU8 Annex of Test Report EUT View 5 EUT View 6 Report No: SSP24070381-1E FCC ID: 2A2BY-SU8 Annex of Test Report EUT View 7

Report No: SSP24070381-1E FCC ID: 2A2BY-SU8 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

FCC ID: 2A2BY-SU8 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 1.08 1(±1) 2 1.58 2480 5 0.4976372 3.0 So a SAR test is not required

CCUT Testing & Certification Report No: SSP24070381-1E FCC Test Report Page 1 of 48 FCC TEST REPORT FCC ID: 2A2BY-SU8 Report No. : SSP24070381-1E Applicant : Dongguan Huien Electronic Technology Co., Ltd Product Name : TWS Wireless Earbuds Model Name : SU8 Test Standard : FCC Part 15.247 Date of Issue : 2024-08-10 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. CCUT Testing & Certification Report No: SSP24070381-1E FCC Test Report Page 2 of 48 Test Report Basic Information Applicant..................................: Dongguan Huien Electronic Technology Co., Ltd Address of Applicant...............: Room 301, Building of 1, No. 429, Changdong Road, Changping Town Dongguan, 523000 China Manufacturer..........................: Dongguan Huien Electronic Technology Co., Ltd Address of Manufacturer........: Room 301, Building of 1, No. 429, Changdong Road, Changping Town Dongguan, 523000 China Product Name.........................: TWS Wireless Earbuds Brand Name.............................: - Main Model..............................: SU8 Series Models..........................: HE-029A Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2013 Date of Test .............................: 2024-08-07 to 2024-08-10 Test Result...............................: PASS Tested By ................................: (Colin Chen) Reviewed By............................: (Lieber Ouyang) 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. CCUT Testing & Certification Report No: SSP24070381-1E FCC Test Report Page 3 of 48 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 .....................................................................................................................................8 2. Summary of Test Results .............................................................................................................................................9 3. Antenna Requirement ............................................................................................................................................... 10 3.1 Standard and Limit.............................................................................................................................................. 10 3.2 Test Result .......................................................................................................................................................... 10 4. Conducted Emissions ................................................................................................................................................ 11 4.1 Standard and Limit.............................................................................................................................................. 11 4.2 Test Procedure.................................................................................................................................................... 11 4.3 Test Data and Results .......................................................................................................................................... 12 5. Radiated Emissions ................................................................................................................................................... 15 5.1 Standard and Limit.............................................................................................................................................. 15 5.2 Test Procedure.................................................................................................................................................... 15 5.3 Test Data and Results .......................................................................................................................................... 17 6. Band-edge Emissions(Radiated) ............................................................................................................................... 21 6.1 Standard and Limit.............................................................................................................................................. 21 6.2 Test Procedure.................................................................................................................................................... 21 6.3 Test Data and Results .................................................................................…

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