2ALVK-HAFW5100TWireless Headphones

Cosonic Intelligent Technologies Co.,Ltd. SC5084971 U.S. Agent Designation for Service of Process - Certification Attestation Letter 8/13/2025 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: 2ALVK-HAFW5100T Per section 2.911(d)(7) of the FCC rules, Cosonic Intelligent Technologies Co.,Ltd. (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: Global Product Services and Consultation LLC FCC Registration Number (FRN): 0033406703 Physical U.S. Company Address: 328 W Palm Ave. Monrovia, CA91016 Contact Person: Chi S Chan Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed (if different from Applicant): Cosonic Intelligent Technologies Co.,Ltd. SC 3021622 Signed: Printed name: Nick Yu Title: R&D Director Company Name: Cosonic Intelligent Technologies Co.,Ltd. Date: 8/13/2025 Signed: Printed name: Chi S Chan Title: Technical Director Company Name: Global Product Services and Consultation LLC Date: 08/14/2025

Rev 1/26/2023 Cosonic Intelligent Technologies Co.,Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2025-07-30 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2ALVK-HAFW5100T Cosonic Intelligent Technologies Co.,Ltd. ("the applicant")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. Sincerely, (Applicantsignature) (Applicant printed name) Nick Yu Rev 1/26/2023 Cosonic Intelligent Technologies Co.,Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2025-07-30 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2ALVK-HAFW5100T Cosonic Intelligent Technologies 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(as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Nick Yu

RF_160, Issue 03 Declaration of Authorization We Name: Cosonic Intelligent Technologies Co.,Ltd. Address: NO.3 Keyuan Road,Songshan Lake District, Dongguan City, Guangdong, China City: Guangdong State or Country: China Declare that: Name Representative of agent: Lisa Wang (1) Agent Company name: EMTEK (SHENZHEN) CO., LTD. Address: Bldg 69, Majialong Industry Zone, Nanshan District, City: Shenzhen Country China is authorized to apply for Certification of the following product(s): Product description: Wireless Headphones Type designation: HA-FW5100T Trademark: JVC FCC ID: 2ALVK-HAFW5100T on our behalf. Date: 2025-07-30 Name: Nick Yu Function: Manager Signature: Notes: (1): Required for FCC application (2): For FCC it must be the Grantee Code “owner” or the authorized agent.

FCC, Request for non-disclosure Date: 16-Jul-10 RF_501, Issue 6 Page 1 of 1 Company Name: Cosonic Intelligent Technologies Co.,Ltd. Address : NO.3 Keyuan Road,Songshan Lake District, Dongguan City, Guangdong, China City: Guangdong Country: China To: Telefication B.V., Dept. FCC TCB Edisonstraat 12A 6902 PK ZEVENAAR The Netherlands Subject: Request for confidentiality FCC ID: 2ALVK-HAFW5100T Reference number: ###### Dear FCC TCB, 1. Long-Term Confidentiality Pursuant to 47 CFR Section 0.459(a) & (b), we hereby requests non-disclosure and confidential treatment of the following materials submitted in support of FCC certification application: Bill(s) of Material Block Diagrams Operational Description Schematic Diagrams Tune-up Procedure Above materials contain secrets, proprietary and technical information, which would customarily be guarded from competitors under 47 CFR, section 0.457(d)(2). Disclosure or publication or any portion of this company confidential material to other parties could cause substantial competitive harm and provide unjustified benefits for competitors. 2. Short-Term Confidentiality (STC) Pursuant to Public Notice DA 04-1705 of the Commission’s policy, in order to comply with the marketing regulations in 47 CFR §2.803 and the importation rules in 47 CFR §2.1204, a pplicant hereby requests Short-Term Confidential treatment of the following materials (note 1): Internal Photos User’s Manual Test Set-up Photos External Photos Justification: The product is not on the market yet Planned Release Date STC: 180Days (notes 2, 3, 4, 5) Date: 2025-07-30 Name and signature of applicant: Nick Yu Notes: 1) A document or type of document can only have ONE type of confidentiality! 2) Short-Term confidentiality is in principle for 45 days from date of grant; it can be extended max 3 times (total time 180 days max.)! 3) FCC must be informed when marketing begins earlier. 4) Release takes place automatically thus extension must be requested in time. Telefication does not remind you of this! 5) Request for extension or for release must be received by Telefication at least 7 days before date of actual marketing or before expiration of the STC period

2025/04/07 1/2 HA-FW5000T 2025/07/22 HA-FW5000T 2/2 2025/04/07 1/2 2025/07/22 2/2

Report No.ENS2506170223W00805R Page 1 of 33 Ver.1.0 TEST REPORT Product Name : Wireless Headphones Model Number : HA-FW5100T FCC ID : 2ALVK-HAFW5100T Prepared for : Cosonic Intelligent Technologies Co., Ltd. Address : NO.3 Keyuan Road,Songshan Lake District, Dongguan Cit y, Guangdong Province 523808 Prepared b y : EMTEK (SHENZHEN) CO., LTD. Address : Bldg 69, Majialong Industry Zone, Nanshan District, Shenzhen, Guangdong, China Tel: (0755) 26954280 Fax: (0755) 26954282 Report Numbe r : ENS2506170223W00805R Date(s) of Tests : July 2, 2025 to July 2, 2025 Date of Issue : Jul y 3, 2025 $二维码$ Report No.ENS2506170223W00805R Page 2 of 33 Ver.1.0 TABLE OF CONTENTS 1. TEST RESULT CERTIFICATION ............................................................................................................................ 4 2. Description of Equipment Under Test .................................................................................................................. 6 3. SAR Measurement System .................................................................................................................................... 7 3.1 Definition of Specific Absorption Rate (SAR) ................................................................................................... 7 3.2 SPEAG DASY System ..................................................................................................................................... 7 3.2.1 Robot .................................................................................................................................................. 8 3.2.2 Probes ................................................................................................................................................ 9 3.2.3 Data Acquisition Electronics (DAE) .................................................................................................... 9 3.2.4 Phantoms ......................................................................................................................................... 10 3.2.5 Device Holder ................................................................................................................................... 11 3.2.6 System Validation Dipoles ................................................................................................................ 11 3.2.7 Tissue Simulating Liquids ................................................................................................................. 12 3.3 SAR System Verification ................................................................................................................................ 14 3.4 SAR Measurement Procedure ....................................................................................................................... 15 3.4.1 Area & Zoom Scan Procedure ......................................................................................................... 15 3.4.2 VolumeScan Procedure .................................................................................................................... 15 3.4.3 Power Drift Monitoring ...................................................................................................................... 16 3.4.4 Spatial Peak SAR Evaluation ........................................................................................................... 16 3.4.5 SAR Averaged Methods ................................................................................................................... 16 4. SARMeasurement Evaluation .............................................................................................................................. 17 4.1 Applicable Standards ..................................................................................................................................... 17 4.2 EUT Testing Position ...................................................................................................................................... 17 4.2.1 Head&Body Exposure Conditions .................................................................................................... 17 4.2.1 SAR Test Exclusion Evaluations ...................................................................................................... 19 4.3 Tissue Verification .......................................................................................................................................... 20 4.4 System Validation ........................................................................................................................................... 20 4.5 System Verification ......................................................................................................................................... 21 4.6 Maximum Output Power ................................................................................................................................. 22 4.6.1 Maximum Conducted Power ............................................................................................................ 22 4.6.2 Measured Conducted Power Result ........................................................................................ ........ 23 4.7 SAR Testing Results ....................................................................................................................................... 24 4.7.1 SAR Test Reduction Considerations ................................................................................................ 24 4.7.2 SAR Results for Head Exposure Condition ...................................................................................... 24 4.7.3 Estimated SAR Calculation .............................................................................................................. 25 5. Calibration of Test Equipment ...................................................................................................................…

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Test Laboratory: Shenzhen EMTEKCo.,Ltd.Date: 2025/7/2 System Check_H2450 DUT: Dipole 2450 MHz; Type:D2450V2; SN:927 Communication System: CW; Frequency: 2450 MHz;Duty Cycle: 1:1 Medium: H2450 Medium parameters used: f = 2450 MHz;σ=1.78S/m;ε r =40.11;ρ=1000kg/m 3 AmbientTemperature：22.1°C; LiquidTemperature：21.9°C DASY5 Configuration: - Probe: EX3DV4 - SN3970; Calibrated: 2025/6/5; - Electronics: DAE4 Sn1418; Calibrated: 2025/6/5 - Phantom: SAM; Type: QD000P40CD; Serial: TP:1794 - Measurement SW: DASY52, Version 52.10 (4); SEMCAD X Version 14.6.14 (7501) Pin=250mW/Area Scan (61x61x1):Interpolated grid: dx=1.500 mm, dy=1.500 mm Maximum value of SAR (interpolated) = 21.3 W/kg Pin=250mW/Zoom Scan (5x5x7)/Cube 0:Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 9.360 V/m; Power Drift = 0.11 dB Peak SAR (extrapolated) = 31.0 W/kg SAR(1 g) = 13.12 W/kg; SAR(10 g) = 6.11 W/kg Maximum value of SAR (measured) = 21.3 W/kg

TestLaboratory:ShenzhenEMTEKCo.,Ltd.Date:2025/7/2 BT DUT:HA-FW5100T Communication System:BT; Frequency: 2480 MHz;Duty Cycle: 1:1.3021 Medium: H2450 Medium parameters used: f = 2480 MHz; σ =1.76S/m; ε r =40.14;ρ =1000 k g/m 3 Ambient Temperature：22.1 °C; Liquid Temperature：21.9 °C DASY5 Configuration: - Probe: EX3DV4 - SN3970; Calibrated: 2025/6/5; - Electronics: DAE4 Sn1418; Calibrated: 2025/6/5 - Phantom: SAM; Type: QD000P40CD; Serial: TP:1794 - Measurement SW: DASY52, Version 52.10 (4); SEMCAD X Version 14.6.14 (7501) Front-DH5 High/Area Scan (7x7x1):Measurement grid: dx=20mm, dy=20mm Maximum value of SAR (measured) = 0.325 W/kg Front-DH5 High/Zoom Scan (5x5x7)/Cube 0:Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 12.80 V/m; Power Drift = -0.07 dB Peak SAR (extrapolated) = 0.869 W/kg SAR(1 g) = 0.349 W/kg; SAR(10 g) = 0.117 W/kg Smallest distance from peaks to all points 3 dB below = 5.1 mm Ratio of SAR at M2 to SAR at M1 = 51.6% Maximum value of SAR (measured) = 0.400 W/kg

Photographs of EUT Setup Fig-4.1 Front of EUT with 0 cm Gap (Head Mode) Fig-4.2 Top of EUT with 0 cm Gap (Head Mode) Fig-4.3 Left Side of EUT with 0 cm Gap (Head Mode) Fig-4.4 Right Side of EUT with 0 cm Gap (Head Mode) Photographs of EUT

1 / 14 承认书 SPECIFICATIONFORAPPROVAL 客户名称 佳禾智能科技股份有限公司 Customer： 品名 FPC 天线Product： 客户料号 300116190265C00 PartNo.: 客户（业务）确认回复： Customer（Business）ApprovalStatus： 签核： Signature： 合格 PASSED 拒收 REJECTED 产品名称 FPC 天线 Product ： 产品型号 CE-2227N PartNo. ： 样品编号 SamplesNo. ： 图纸编号 DrawingNo. ： 日期 2025.6.24 Date: 承办 PreparedBy 校对 ProofedBy 审核 CheckedBy DATE: DATE: DATE: 创新INNOVATION信赖RELIABILITY满意SATISFACTION 深圳市昱晟通讯设备有限公司 SHENZHENYUSHENGCOMMUNICATIONEQUIPMENTCO.,LTD 地址 : 深圳市光明区光明大道与东长路交叉口南太云创谷园区2栋4层4A ADDRESS:4A,Floor4,Building2,YuntaiChuangguPark,southeastoftheintersectionofGuangmingAvenueandDongchangRoad,GuangmingDistrict,Shenzhen TEL：0755-23984257FAX：0755-86090455 表单编号： CO-ENG-031B 环保：ROHS2.0/REACH 版本：A/0 深圳市昱晟通讯设备有限公司 2/14 CE-2227N项目天线物料需求规格书 客户名称：佳禾智能科技股份有限公司 客户品名：CE-2227N 产品名称：FPC天线 产品规格: CE-2227NL边天线FPC12.99*9.67*0.22MM 物料编码：300116190265C00 变更内容履历： 序号版本状态生效日期责任人页码备注 1R:A初版2025.6.24李洁仪14 供方承认签字： 责任人/日期IQC/日期审核/日期核准/日期 MD 闭业智 苏观凤 贺磊 RF何诗吟 需方承认签字（认签后请寄回）： 需方判定结果：□合格□不合格 开发设计工程师/日期SQE工程师/日期采购负责人/日期开发部经理批准/日期 深圳市昱晟通讯设备有限公司 3/14 目录 1.概述..............................................................................4 1.1适用范围 .........................................................................4 1.2项目基础信息 .....................................................................4 2.技术指标要求......................................................................4 2.1测试项目及设备介绍 ...............................................................4 2.2有源报告 .........................................................................4 2.2.1测试说明........................................................................4 2.2.2L天线无源数据..................................................................5 2.2.3L天线有源参数..................................................................6 2.2.4天线匹配更改/L .................................................................6 2.2.5天线场测数据 ...................................................................7 2.2.6天线测试环境...................................................................7 3.结构图纸 ..........................................................................8 4.物料清单 ..........................................................................9 5.可靠性报告.......................................................................10 5.1盐雾测试报告....................................................................10 5.2高温高湿实验报告................................................................11 5.3冷热冲击测试报告 ................................................................12 6.包装示意图 .......................................................................13 深圳市昱晟通讯设备有限公司 4/14 1.概述 1.1适用范围 本要求规定了CE-2227N产品的天线技术要求和物料需求规范。 本要求适用于CE-2227N天线选型、测试和验收。 1.2项目基础信息 天线名称： CE-2227N 天线频率： BT：2400MHz-2500MHz 天线材质：FPC天线 2.技术指标要求 2.1测试项目及设备介绍 清单测试项目 设备 有源测试TRP,TIS综合测试仪、微波暗室 2.2有源报告 2.2.1测试说明 测试工具：Agilent8960综测仪、R&SCMW500、全电波远场ETS暗室，高精度定位系统及其控制器和带 自动测试程序的电脑 测试环境:温度22°C±3°C，湿度50%±15% 测试方法：DUT以H面放于转台中心位置固定，与喇叭天线中心位置在同一个水平线上。 定位系统使DUT在整个球面进行旋转，满足高精度的三维定位。各射频仪器、转台控制器与带自动测试 软件的PC通过GPIB接口进行通信 深圳市昱晟通讯设备有限公司 5 / 14 2.2.2L天线无源数据 FreqEffi(%)Gain 2400.0 15.3%-5.22 2410.0 16.7%-4.8 2420.0 17.5%-4.29 2430.0 18.4%-3.82 2440.0 18.9%-3.38 2450.0 17.8%-3.44 2460.0 16.2%-3.36 2470.0 15.6%-4.2 2480.0 15.4%-4.22 深圳市昱晟通讯设备有限公司 6/14 2.2.3L天线有源参数 ChannelNo. Freespacetestdata/LHeadandeartestdata/L TRP(dBm)TIS(dBm)TRP(dBm)TIS(dBm) 0 3.62-85.56 1.24-83.22 39 3.77-86.6 1.63-83.63 78 3.21-86.69 0.52-83.70 2.2.4天线匹配更改/L 深圳市昱晟通讯设备有限公司 7/14 2.2.5天线场测数据 测试方法： 1、距离测试：用手机连接蓝牙耳机，将手机置于60cm高的非金属支架上，测试人员 佩戴耳机向远处行走，同时测试人员进行360度旋转。行至耳机内的通话声音和音乐 声音不出现卡断的极限距离，测量距离。 2、近身测试：测试人员随身携带（最好是蓝牙耳机主耳相对的裤子的后兜）手机， 进行人体转动测试有无卡断。 3、双手捂测试：测试人员佩戴耳机，并与手机连接播放音乐，测试两种状态：1）指 尖朝上测试，测试音乐有无卡断；2）指尖朝后测试，测试音乐有无卡断。 测试地点：在我司楼下室外空旷处（见测试环境） 测试设备：Iphone6/三星S8 测试结果：听音乐 1、左右耳互为主耳时测试拉距测试Iphone6/25M内无卡顿现象. 2、左右耳互为主耳时测试拉距测试三星S8/16M内无卡顿现象. 2、近身测试：暂未测试 3、双手捂测试：暂未测试 2.2.6天线测试环境 深圳市昱晟通讯设备有限公司 8/14 3.结构图纸 深圳市昱晟通讯设备有限公司 9/14 4.物料清单 深圳市昱晟通讯设备有限公司 10/14 5.可靠性报告 5.1盐雾测试报告 深圳市昱晟通讯设备有限公司 客户名称佳禾生产批次样品 产品名称FPC天线测试数量3PCS 产品料号CE-2227N测试标准48小时 检验日期2025.6.12货品素材FPC 测试时间：2025.6.10至2025.6.12 测试项目要求标准实际数值判定测试项目要求标准实际数值判定 测试仪器规格KD-60KD-60OK测试时间48H48HOK 盐雾测试类型NSS中性NSS中性OK盐雾箱温度35°C35°COK 盐水PH值6.5-7.27OK盐雾沉降量（H.80C）1-2ml1.7mlOK 喷雾方式连续喷雾连续喷雾OK货品材质FPCFPCOK 盐水成份5%/NaCL5%/NaCLOK压缩空气节压力1±0.1KG/CM 2 1OK 饱和温度47°C47°COK试样放置角度90°90°OK 测试观察时间观察现象 4H无异常 12H无异常 24H无异常 36H无异常 48H无异常 判定标准：依国标5944-86评级方法判定，9级以上为合格 最终判定结果合格√ 测试人员陈文静审核 莫东元审批冯继武 备注：常用的盐雾试验方法有：NSS中惦盐雾试验，AASS乙酸盐雾试验，CASS铜乙酸加速试验. 版本：A.O 深圳市昱晟通讯设备有限公司 11/14 5.2高温高湿实验报告 深圳市昱晟通讯设备有限公司 高低温循环测试报告 客户佳禾日期2025.6.12厂内编号095030 客户料号 CE-2227N 数量3PCS测试时间48H 材料规格FPC天线供应商昱晟参考标准 MIL-SDT-202Method017IEC60749-25 JEDECJESD22-A104-BIEC68-2-1MIL-STD- 2168-85 测试目的：检测产品的可靠性及镀层的结合力、镀层抗氧化及抗腐蚀能力。 设备名称：高低温测试箱 实验室环境 温度20°C相对湿度55%大气压/ 测试参数 温度恒温低温温度公差 时间 高 低 温 高温55±2°C高温时间24H 备注 1、高温升温 是从常温升至 设定高温 2、低温降温 是指从设定高 温降至设定低 温 高湿95％RH低温时间24H 循环次数12次其它相对湿度95%// 外观检验分层无氧化无起泡无油墨脱落无 测试 抗剥 离 OK 点焊未见异常百格测试未见异常天线粘贴力未见异常 测试图片： 产品编号产品测试结果判定 CE-2161B-1OK合格 测试员：温健文审核：钟文彪 深圳市昱晟通讯设备有限公司 12/14 5.3冷热冲击测试报告 深圳市昱晟通讯设备有限公司 冷热冲击测试报告 客户佳禾日期2025.6.12厂内编号095030 客户料号 CE-2227N 数量3PCS测试时间48H 材料规格FPC天线供应商昱晟参考标准 MIL-SDT-202Method017IEC60749-25 JEDECJESD22-A104-BIEC68-2-1MIL- STD-2168-85 测试目的：检测产品的可靠性及镀层的结合力、镀层抗氧化及抗腐蚀能力。 设备名称：高低温测试箱 实验室环境 温度20°C相对湿度55%大气压/ 测试参数 温度恒温低温温度公差 时间 高 低 温 高温85±2°C高温时间12 备注 1、高温升温 是从常温升至 设定高温 2、低温降温 是指从设定高 温降至设定低 温 低温﹣40±2°C低温时间12 循环次数24其它相对湿度/// 外观检验分层无氧化无起泡无油墨脱落无 测试抗剥离 OK 点焊未见异常百格测试未见异常天线粘贴力未见异常 测试图片： 产品编号产品测试结果判定 CE-2161B-1 OK合格 测试员：温健文审核：钟文彪 深圳市昱晟通讯设备有限公司 13/14 6.包装示意图 包装方式图 产品名称 FPC天线 项目型号 CE-2227N 装箱明细 纸箱尺寸1: 270*260*200MM 纸箱尺寸2: 260*200*200MM 纸箱尺寸3: 根据订单数量/体积而 定 装箱方式 最 小包装100 个一 包， 依次 装 防水袋 ， 一个防水袋最多 装 1000 个 物料 装箱总数按订单数量包装 标签要求 标签尺寸1： 通用100*100mm 标签尺寸2： 根据客户要求 注意事项 1.因订单数量限制，每款物料的装箱方式根据订单总数量或者实物体积选择箱子大小 2.保存温度：常温 3.保存条件：贮藏在阴凉干燥处 深圳市昱晟通讯设备有限公司 14/14

Report No. ENS2506170223W00801R Page 1 of 70 Ver.1.0 TEST REPORT Product Name ：Wireless Headphones Model Number ： HA-FW5100T FCC ID ：2ALVK-HAFW5100T Prepared for : Cosonic Intelligent Technologies Co., Ltd. Address : NO.3 Keyuan Road,Songshan Lake District, Dongguan Cit y, Guangdong Province 523808 Prepared b y : EMTEK (SHENZHEN) CO., LTD. Address : Bldg 69, Majialong Industry Zone, Nanshan District, Shenzhen, Guan gdong, China Tel: (0755) 26954280 Fax: (0755) 26954282 Report Numbe r : ENS2506170223W00801R Date (s) of Tests : June 17, 2025 to July 12, 2025 Date of Issue : July 12, 2025 $二维码$ Report No. ENS2506170223W00801R Page 2 of 70 Ver.1.0 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ....................................................................................................... 3 2 EUT TECHNICAL DESCRIPTION ...................................................................................................... 5 3 SUMMARY OF TEST RESULT .......................................................................................................... 6 4 TEST METHODOLOGY ..................................................................................................................... 7 4.1 GENERAL DESCRIPTION OF APPLIED STANDARDS ............................................................ 7 4.2 MEASUREMENT EQUIPMENT USED ....................................................................................... 7 4.3 DESCRIPTION OF TEST MODES ............................................................................................. 8 5 FACILITIES AND ACCREDITATIONS ................................................................................................ 9 5.1 FACILITIES ................................................................................................................................. 9 5.2 LABORATORY ACCREDITATIONS AND LISTINGS .................................................................. 9 6 TEST SYSTEM UNCERTAINTY ...................................................................................................... 10 7 SETUP OF EQUIPMENT UNDER TEST ......................................................................................... 11 7.1 RADIO FREQUENCY TEST SETUP 1 ...................................................................................... 11 7.2 RADIO FREQUENCY TEST SETUP 2 ...................................................................................... 11 7.3 CONDUCTED EMISSION TEST SETUP ................................................................................. 13 7.4 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ..................................................... 14 7.5 SUPPORT EQUIPMENT .......................................................................................................... 14 8 FREQUENCY HOPPING SYSTEM REQUIREMENTS ................................................................... 15 8.1 STANDARD APPLICABLE ........................................................................................................ 15 8.2 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE ............................................ 15 8.3 EQUAL HOPPING FREQUENCY USE .................................................................................... 16 8.4 FREQUENCY HOPPING SYSTEM .......................................................................................... 16 9 TEST REQUIREMENTS ................................................................................................................... 17 9.1 20DB BANDWIDTH .................................................................................................................. 17 9.2 CARRIER FREQUENCY SEPARATION ................................................................................... 21 9.3 NUMBER OF HOPPING FREQUENCIES ................................................................................ 25 9.4 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................ 27 9.5 MAXIMUM PEAK CONDUCTED OUTPUT POWER................................................................ 29 9.6 CONDUCTED SUPRIOUS EMISSION ..................................................................................... 33 9.7 RADIATED SPURIOUS EMISSION .......................................................................................... 50 9.8 CONDUCTED EMISSION TEST .............................................................................................. 64 9.9 ANTENNA APPLICATION ......................................................................................................... 67 10 APPENDIX PHOTOGRAPHS OF EUT ................................ ............................................................ 69 11 APPENDIX PHOTOGRAPHS OF TEST SETUP ............................................................................. 70 Report No. ENS2506170223W00801R Page 3 of 70 Ver.1.0 1 TEST RESULT CERTIFICATION Applicant : Cosonic Intelligent Technologies Co., Ltd. Address : NO.3 Keyuan Road,Songshan Lake District, Dongguan City, Guangdong Province 523808 Manufacturer : Cosonic Intelligent Technologies Co., Ltd. Address : NO.3 Keyuan Road,Songshan Lake District, Dongguan City, Guangdong Province 523808 EUT : Wireless Headphones Model Name : HA-FW5100T Trademark : JVC Measurement Procedure Used: APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 2, Subpart J FCC 47 CFR Part 15, Subpart C PASS The above equipment was tested by EMTEK (SHENZHEN) CO., LTD. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10 (2013) and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 2 and Part 15.247 The test results of this report relate only to the tested sample identified in this report. Date of Test : June 17, 2025 to Jul y 12, 2025 Prepared b y : Una Yu…

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Report No. ENS2506170223W00801R Page 36 of 70 Ver.1.0 2DH5-Ant1-2402-PASS 2DH5-Ant1-2441-PASS 2DH5-Ant1-2480-PASS Report No. ENS2506170223W00801R Page 37 of 70 Ver.1.0 3DH5-Ant1-2402-PASS 3DH5-Ant1-2441-PASS 3DH5-Ant1-2480-PASS Report No. ENS2506170223W00801R Page 38 of 70 Ver.1.0 Band edge measurements TestMode Antenna ChName Frequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 14.03 -49.08 ≤-5.97 PASS High 2480 14.14 -56.36 ≤-5.86 PASS Low Hop_2402 13.46 -50.47 ≤-6.55 PASS High Hop_2480 13.87 -56.71 ≤-6.14 PASS 2DH5 Ant1 Low 2402 12.22 -47.47 ≤-7.78 PASS High 2480 11.73 -56.91 ≤-8.27 PASS Low Hop_2402 9.61 -44.9 ≤-10.39 PASS High Hop_2480 12.89 -56.34 ≤-7.11 PASS 3DH5 Ant1 Low 2402 12.04 -46.55 ≤-7.96 PASS High 2480 11.98 -55.87 ≤-8.02 PASS Low Hop_2402 9.77 -43.83 ≤-10.23 PASS High Hop_2480 13.72 -56.25 ≤-6.28 PASS Report No. ENS2506170223W00801R Page 39 of 70 Ver.1.0 DH5-Ant1-2402-PASS DH5-Ant1-2480-PASS DH5-Ant1-Hop_2402-PASS Report No. ENS2506170223W00801R Page 40 of 70 Ver.1.0 DH5-Ant1-Hop_2480-PASS 2DH5-Ant1-2402-PASS 2DH5-Ant1-2480-PASS Report No. ENS2506170223W00801R Page 41 of 70 Ver.1.0 2DH5-Ant1-Hop_2402-PASS 2DH5-Ant1-Hop_2480-PASS 3DH5-Ant1-2402-PASS Report No. ENS2506170223W00801R Page 42 of 70 Ver.1.0 3DH5-Ant1-2480-PASS 3DH5-Ant1-Hop_2402-PASS 3DH5-Ant1-Hop_2480-PASS Report No. ENS2506170223W00801R Page 43 of 70 Ver.1.0 Conduceted Spurious Emission TestMode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 2402 30~1000 14.03 -76.99 ≤-5.97 PASS 1000~26500 14.03 -49.94 ≤-5.97 PASS 2441 30~1000 13.71 -77.25 ≤-6.29 PASS 1000~26500 13.71 -49.5 ≤-6.29 PASS 2480 30~1000 14.14 -77.4 ≤-5.86 PASS 1000~26500 14.14 -49.56 ≤-5.86 PASS 2DH5 Ant1 2402 30~1000 12.22 -78.8 ≤-7.78 PASS 1000~26500 12.22 -50.1 ≤-7.78 PASS 2441 30~1000 12.20 -78.61 ≤-7.8 PASS 1000~26500 12.20 -49.87 ≤-7.8 PASS 2480 30~1000 11.73 -78.23 ≤-8.27 PASS 1000~26500 11.73 -49.42 ≤-8.27 PASS 3DH5 Ant1 2402 30~1000 12.04 -78.57 ≤-7.96 PASS 1000~26500 12.04 -50.22 ≤-7.96 PASS 2441 30~1000 11.82 -78.59 ≤-8.18 PASS 1000~26500 11.82 -50.19 ≤-8.18 PASS 2480 30~1000 11.98 -78.7 ≤-8.02 PASS 1000~26500 11.98 -49.79 ≤-8.02 PASS Report No. ENS2506170223W00801R Page 44 of 70 Ver.1.0 DH5-Ant1-2402-30~1000-PASS DH5-Ant1-2402-1000~26500-PASS DH5-Ant1-2441-30~1000-PASS Report No. ENS2506170223W00801R Page 45 of 70 Ver.1.0 DH5-Ant1-2441-1000~26500-PASS DH5-Ant1-2480-30~1000-PASS DH5-Ant1-2480-1000~26500-PASS Report No. ENS2506170223W00801R Page 46 of 70 Ver.1.0 2DH5-Ant1-2402-30~1000-PASS 2DH5-Ant1-2402-1000~26500-PASS 2DH5-Ant1-2441-30~1000-PASS Report No. ENS2506170223W00801R Page 47 of 70 Ver.1.0 2DH5-Ant1-2441-1000~26500-PASS 2DH5-Ant1-2480-30~1000-PASS 2DH5-Ant1-2480-1000~26500-PASS Report No. ENS2506170223W00801R Page 48 of 70 Ver.1.0 3DH5-Ant1-2402-30~1000-PASS 3DH5-Ant1-2402-1000~26500-PASS 3DH5-Ant1-2441-30~1000-PASS Report No. ENS2506170223W00801R Page 49 of 70 Ver.1.0 3DH5-Ant1-2441-1000~26500-PASS 3DH5-Ant1-2480-30~1000-PASS 3DH5-Ant1-2480-1000~26500-PASS Report No. ENS2506170223W00801R Page 50 of 70 Ver.1.0 9.7 RADIATED SPURIOUS EMISSION 9.7.1 Applicable Standard According to FCC Part 15.247(d) and 15.209 and KDB 558074 D01 15.247 MEAS GUIDANCE v05r02 9.7.2 Conformance Limit According to FCC Part 15.247(d): radiated emissions which fall in the restricted bands, as defined in §15.205(a), must also comply with the radiated emission limits specified in §15.209(a) (see §15.205(c)). According to FCC Part15.205, Restricted bands MHz MHz MHz GHz 0.090-0.110 16.42-16.423 399.9-410 4.5-5.15 0.495-0.505 16.69475-16.69525 608-614 5.35-5.46 2.1735-2.1905 16.80425-16.80475 960-1240 7.25-7.75 4.125-4.128 25.5-25.67 1300-1427 8.025-8.5 4.17725-4.17775 37.5-38.25 1435-1626.5 9.0-9.2 4.20725-4.20775 73-74.6 1645.5-1646.5 9.3-9.5 6.215-6.218 74.8-75.2 1660-1710 10.6-12.7 6.26775-6.26825 123-138 2200-2300 14.47-14.5 8.291-8.294 149.9-150.05 2310-2390 15.35-16.2 8.362-8.366 156.52475-156.52525 2483.5-2500 17.7-21.4 8.37625-8.38675 156.7-156.9 2690-2900 22.01-23.12 8.41425-8.41475 162.0125-167.17 3260-3267 23.6-24.0 12.29-12.293 167.72-173.2 3332-3339 31.2-31.8 12.51975-12.52025 240-285 3345.8-3358 36.43-36.5 12.57675-12.57725 322-335.4 3600-4400 Above 38.6 13.36-13.41 According to FCC Part15.205, the level of any transmitter spurious emission in Restricted bands shall not exceed the level of the emission specified …

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