2BKRH-KR10True Wireless Stereo Earphones

TCB CALL página 1 File FCC ID: 2BKRH-KR10 Please upload an exhibit that explains how does the TCB verify the new agent information: 1- Is the address of the agent a valid physical US mailing address (not a US post office box, not a virtual mailbox, not P.O. Boxes, not a vacant lot, not a public building, etc.) ○ We have checked if the address exists in a real and potential building (Google maps) + official US register, after this verification and the evidence below we can guarantee the following: not a US post office box not a virtual mailbox not P.O. Boxes not a vacant lot not a public building(note) ► We checked the FCC FRN Search based on the information provided by the grantee. On the official register from : https://opencorporates.com/companies/us_il/LLC_12842678 In google: TCB CALL página 2 Bank information TCB CALL página 3 TCB CALL página 4 TCB CALL página 5 TCB CALL página 6 TCB CALL página 7 TCB CALL página 8 TCB CALL página 9 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "C5266091_X23_Ed1_US_Agent_Letter" included in the file is ok. 2- Is the agent physically located at that valid US address such that the agent can be legally served at that address? Yes , check above 3- Has the listed agent clearly agreed in writing to serve as the agent for the grantee at that address? Yes, it is included in the exhibit "C5266091_X23_Ed1_US_Agent_Letter" >

1/1 US Agent for Service of Process LETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL 60174, USA Contact Person: Tim Payne Phone: (708) 571-3148 Email: [email protected] Applicant: Company name: Dongguan Harmony Electronic Technology Co., Ltd. Product Description: True Wireless Stereo Earphones FRN: 0035899830 Grantee Code: 2BKRH FCC ID: 2BKRH-KR10 Contact Name: CAI RONG TEGN Address: Room 101, No. 3, Jiankai Road, Shipai town, Dongguan City, Guangdong Province, China Telephone No: 0769-81819660 Email: [email protected] [Dongguan Harmony Electronic Technology Co., Ltd.] certifies that, as of the date of this filing of the application with the TCB, [FCC US Agent, LLC] is our designated US agent for service of process for the above referenced FCC ID. [Dongguan Harmony Electronic Technology Co., Ltd.] 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 equipment. [FCC US Agent, LLC] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. Date: 2026/06/10 Applicant’s Name: CAI RONG TEGN US Agent’s Name: Tim Payne Title: Manager Title: Manager Signature Signature

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Dongguan Harmony Electronic Technology Co., Ltd. Grantee code: 2BKRH FCC ID: 2BKRH-KR10 FRN: 0035899830 Contact Name: CAI RONG TEGN Address: Room 101, No. 3, Jiankai Road, Shipai town, Dongguan City, Guangdong Province, China Telephone No: 0769-81819660 Fax No: 0769-81819660 Email: [email protected] i. [Dongguan Harmony Electronic Technology 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. The applicant must sign this certification. ii. [Dongguan Harmony Electronic Technology Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Dongguan Harmony 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 as an entity producing “covered” equipment. Date: 2026-06-10 Applicant’s Name: CAI RONG TEGN Title: Manager Signature 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

Dongguan Harmony Electronics Technology Co.,ltd. Code 00018768 Ed. 1 Item 1. The device is able to install software/program installation? ☐Yes, go to Item 2. ☒No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky cybersecurity or anti-virus software. Device True Wireless Stereo Earphones Company name Dongguan Harmony Electronics Technology Co.,ltd. Grantee code 2BKRH FCC ID 2BKRH-KR10 FRN 0035899830 Contact name CAI RONG TEGN Address Room 101, No. 3, Jiankai Road, Shipai town, Dongguan City, Guangdong Province, China Telephone number 0769-81819660 [email protected] Chipset/module information JL7018 Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 Item 2. Technical Requirements for Kaspersky Cybersecurity Software: # General Requirements (For all Devices) Yes / No or N/A Comments 1 Internet connection for activation and updates (For all Operating Systems) N/A # General Requirements (For Windows Devices) Yes / No or N/A Comments 1 Storage: 1500 MB free space on the hard drive N/A 2 Operating System: Microsoft Windows 8, 8.1, 10 & 11 Home / Pro / Enterprise Microsoft Windows 7 Starter / Home Basic & Premium / Professional / Ultimate SP1 or higher N/A 3 Processor: 1 GHz or higher (x86 or x64) N/A 4 Memory (RAM)1 GB (32-bit) or 2 GB (64-bit) N/A 5 Screen Resolution: Minimum resolution of 1024 x 768 N/A # General Requirements (For macOS devices) Yes / No or N/A Comments 1 Operating System macOS® 13 – 14 N/A 2 Memory (RAM)4 GB N/A 3 Storage: 3455 MB free space on the hard drive N/A # General Requirements (For Android Devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 2 Operating System: Android™ 10 – 14 N/A 3 Screen Resolution: Minimum resolution of 320 x 480 N/A # General Requirements (for iOS devices) Yes / No or N/A Comments 1 Storage: 150 MB free space N/A 3 2 Operating System: iOS® 17 N/A # General Requirements (For Linux system) Yes / No or N/A Comments 1 Hard drive: 1 GB of free space N/A 2 CPU: Intel Pentium 1 GHz or higher N/A 3 RAM: 1 GB N/A 4 Minimum software requirements: AlmaLinux OS 8 or later; AlterOS 7.5 or later; Astra Linux Common Edition 2.12 or later; CentOS 6.7 or later; Debian GNU/Linux 10.0 or later; EulerOS 2.0 or later; Oracle Linux 7.3 or later ; Red Hat Enterprise Linux 6.7 or later ; Rocky Linux 8.5 or later ; SUSE Linux Enterprise Server 12.5 or later; Ubuntu 12.04 or later ; Uncom OS Home / Business / Education / Enterprise 2.2 or later; ALT Linux Workstaton / Workstation K / Server / Education 8 or later; ROSA Linux Workstation / Server 12 or later ; RED OS 7.3 and later ; N/A After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? ☐ Yes, go to Item 3. 4 ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software Item 3. Connectivity Capabilities: # Physical Interface Purpose Justification 1 1 # Wireless Interface Purpose Justification 1 1 After the review of this items, the device: ☒ Cannot support installation of any cybersecurity or anti-virus software on the covered list. ☐ Potentially can operate with any cybersecurity or anti-virus software on the covered list – additional third- party proof is provided to demonstrate compliance with requirements as of 2.911(d)5(i),(ii) – “Proof of Compliance with Covered List Software Requirements” of this document applies Signature: Name: CAI RONG TEGN Date: 2026-06-10 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

Dongguan Harmony Electronic Technology Co., Ltd. Product Similarity Declaration Product name: True Wireless Stereo Earphones Model name: H10, H1, H20, H30, HE01 FCC ID: 2BKRH-KR10 We (Dongguan Harmony Electronic Technology Co., Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the in appearance color and model name Signature: Name: CAI RONG TEGN Title: Manager 2026-06-10

C5266091_X10_Ed.2 1/1 Dongguan Harmony Electronic Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2026-06-10 Subject: Request for Confidentiality FCC ID: 2BKRH-KR10 To Whom It May Concern, Pu rsuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☒ Block Diagram ☒☐ Schematics ☒☐ Test Report No No Test Setup Photos No ☒ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name: CAI RONG TEGN Title: Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization < Dongguan Harmony Electronic Technology Co., Ltd. > Company: Dongguan Harmony Electronic Technology Co., Ltd. Address: Room 101, No. 3, Jiankai Road, Shipai town, Dongguan City, Guangdong Province, China Product Name: True Wireless Stereo Earphones Model Number: H10, H1, H20, H30, HE01 FCC Identifier: 2BKRH-KR10 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: CAI RONG TEGN Date: 2026-06-10 Title: Manager Signature of applicant:

Label Location On EUT Label Product Name: True Wireless Stereo Earphones Model No.: H10 Rating(s): Input: 5VDC, 0.8A FCC ID: 2BKRH-KR10

RF EXPOSURE EVALUATION FCC ID: 2BKRH-KR10 According to KDB 447498 D01 General RF Exposure Guidance v06 and FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environment impact of human exposure to radio frequency(RF) Radiation as specified in §1.1307(b): Routine SAR evaluation refers to that specifically required by §2.1093, using measurements or computer simulation. When routine SAR evaluation is not required, portable transmitters with output power greater than the applicable low threshold require SAR evaluation to qualify for TCB approval. Channel (MHz) Maximum output power (dBm) Tune up tolerance (dBm) Max Tune Up Power (dBm) Distanc e (mm) Calculation results Limit Operating Mode 2402 -2.28 -2.28±1 -1.28 5 0.231 3 BT 2441 -2.76 -2.76±1 -1.76 5 0.208 3 2480 -2.10 -2.10±1 -1.10 5 0.244 3 2402 0.32 0.32±1 1.32 5 0.420 3 2441 -0.31 -0.31±1 0.69 5 0.366 3 2480 0.39 0.39±1 1.39 5 0.434 3 Test Results: PASS.

TEST REPORT Report No.: 8430EU122206W Applicant: Dongguan Harmony Electronics Technology Co.,ltd. Address: Room 101, No.3 Jiankai Road, Shipai town, Dongguan City, Guangdong Province, 523341 China Product Name: True Wireless Stereo Earphones Model No.: H10 (refer to clause 2.4) Trademark: N/A FCC ID: 2BKRH-KR10 Test Standard(s): 47 CFR Part 15.247 Test Result: Pass Date of Receipt: Apr. 22, 2026 Test Date: Apr. 22, 2026 - May 29, 2026 Date of Issue: Jun. 05, 2026 ISSUED BY: SHENZHEN EU TESTING LABORATORY LIMITED Prepared by: Reviewed and Approved by: Peach Zheng/ Engineer Sally Zhang/ Manager Page 2 of 87 Report No.: 8430EU122206W TRF Version: A01 Revision Record Report Version Issued Date Description Status V0 Jun. 05, 2026 Original Valid Page 3 of 87 Report No.: 8430EU122206W TRF Version: A01 Table of Contents 1 COVER PAGE .................................................................................................................................. 1 2 GENERAL INFORMATION ....................................................................................................................... 5 2.1 APPLICANT INFORMATION .................................................................................................................. 5 2.2 MANUFACTURER INFORMATION .......................................................................................................... 5 2.3 FACTORY INFORMATION ..................................................................................................................... 5 2.4 GENERAL DESCRIPTION OF E.U.T. ..................................................................................................... 5 2.5 TECHNICAL INFORMATION OF E.U.T. ................................................................................................... 6 3 TEST SUMMARY ...................................................................................................................................... 7 3.1 TEST STANDARD ............................................................................................................................... 7 3.2 TEST VERDICT ................................................................................................................................... 7 3.3 TEST LABORATORY ........................................................................................................................... 8 4 TEST CONFIGURATION .......................................................................................................................... 9 4.1 TEST ENVIRONMENT .......................................................................................................................... 9 4.2 TEST EQUIPMENT .............................................................................................................................. 9 4.3 DESCRIPTION OF SUPPORT UNIT ....................................................................................................... 11 4.4 TEST MODE ..................................................................................................................................... 11 4.5 DESCRIPTION OF CALCULATION ........................................................................................................ 11 4.5.1 Field Strength Calculation .................................................................................................. 11 4.5.2 Disturbance Calculation ..................................................................................................... 11 4.6 MEASUREMENT UNCERTAINTY ......................................................................................................... 12 4.7 DEVIATION FROM STANDARDS .......................................................................................................... 12 4.8 ABNORMALITIES FROM STANDARD CONDITION.................................................................................. 12 5 EVALUATION RESULTS (EVALUATION) .............................................................................................. 13 5.1 ANTENNA REQUIREMENT .................................................................................................................. 13 5.1.1 Test Specification .............................................................................................................. 13 5.1.2 Test Data ........................................................................................................................... 13 6 RADIO SPECTRUM MATTER TEST RESULTS (RF) ............................................................................ 14 6.1 CONDUCTED EMISSION AT AC POWER LINE ...................................................................................... 14 6.1.1 Test Specification .............................................................................................................. 14 6.1.2 E.U.T. Operation ................................................................................................................ 14 6.1.3 Test Setup Diagram ........................................................................................................... 14 6.1.4 Test Data ........................................................................................................................... 14 6.2 20DB BANDWIDTH........................................................................................................................... 17 6.2.1 Test Specification .............................................................................................................. 17 6.2.2 E.U.T. Operation ................................................................................................................ 17 6.2.3 Test Setup Diagram ........................................................................................................... 18 6.2.4 Test Data ..........................................................................................................…

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Application: WLAN, 802.11b/g, Bl uetooth, etc ... Features SMD, high reliability, ultra Impact, Omni-directional ... Working Frequency Range 2400 ~2484 MHz Peak Gain 1.24dBi (Typ.) Impedance 50 Ohm Return loss 10 dB ( Min) PolarizationLinear Azimuth Beamwidth Omni-directional Operation Temperature(°C) -40 ~85°C Dimension (mm) L 3.15+-0.15 No.Terminal Nam e W 1.55+- 0.15 1 Feeding 2 Soldering T 0.5+-0.10 A 0.35+-0.10 (1)Product Type Chip Antenna (2) Size Co de 3.2x1.6mm (3) Type Code H5 (4) Packing Tape and reel (5) Frequency 2.45GHz The specification is defined on EVB. Dimension and Terminal Configuration Part number HLX 3216 H5 P 2G45 (1)(2)(3)(4 ) (5) HLX 3216P2G45 H5 Electrical Specification 2.4 GHz Return Loss & Radiation Return Loss PCB Dimension & Antenna Layout Reference unit :mm Evaluation Board Reference Electrical Characteristics HLX3216P2G45H5 2400MHz 2450MHz 2500MHz Radiation 2400MHz2450MHz2500MHz Efficiency82.52%85.26%83.01% Peak Gain1.15 dBi1.24 dBi1.19 dBi Directivity1.89 dBi1.97 dBi1.91 dBi Frequency(MHz) S11 (dB) 2400-10.50 2450-30.62 2500-11.47 Reel Taping Blister Tape Checking noteIndexSpec (mm) Sprocket hole D0 1.50 +0.10/-0.00 Checking noteIndexSpec (mm) Distance sprocket hole to outside E1 1.75 ± 0.10 Internal diameter of reel A 60.20 ± 0.50 Distance sprocket hole to pocket F 5.50 ± 0.05 External diameter of reel B 178 ± 1.00 Distance sprocket hole to sprocket hole P04.00 ± 0.10 Distance pocket to pocket P1 4.00 ± 0.10 Distance sprocket hole to pocket P2 2.00 ± 0.05 Quantity/per reel 5000 pcs Tape material Plastic (embossed) Tape width W 12.00 +0.30/-0.10 Pocket width nominal clearance A0 2.28 ± 0.13 Pocket length nominal clearance B0 5.70 ± 0.13 Pocket depth minimum clearance K0 1.58 ± 0.10 Thickness of tape T 0.23 ± 0.02 Taping Specifications HLX3216P2G45H5 Test Item Procedure Requirements Ceramic Type Remark (Reference) Electrical Characterization Fulfill the electrical specification User Spec. Thermal Shock 1. Preconditioning: 50 ± 10°C / 1 hr , then keep for 24 ± 1 hrs at room temp. 2. Initial measure: Spec: refer Initial spec. 3. Rapid change of temperature test: -30°C to +85°C; 100 cycles; 15 minutes at Lower category temperature; 15 minutes at Upper category temperature. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 107 Temperature Cycling 1. Initial measure: Spec: refer Initial spec. 2. 100 Cycles (-30°C to +85°C), Soak Mode=1 (2 Cycle/hours). 3. Measurement at 24 ± 2Hours after test condition. No Visible Damage. Fulfill the electrical specification. JESD22 JA104 High Temperature Exposure 1. Initial measure: Spec: refer Initial spec. 2. Unpowered; 500hours @ T=+85°C . 3. Measurement at 24 ± 2 hours after test. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 108 Low Temperature Storage 1. Initial measure: Spec: refer Initial spec. 2. Unpowered: 500hours @ T= -30°C . 3. Measurement at 24 ± 2 hours after test. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 108 Solderability (SMD Bottom Side) Dipping method: a. Temperature: 235 ± 5°C b. Dipping time: 3 ± 0.5s The solder should cover over 95% of the critical area of bottom side. IEC 60384-21/22 4.10 Soldering Heat Resistance (RSH) Preheating temperature: 150 ± 10°C. Preheating time: 1~2 min. Solder temperature: 260 ± 5°C. Dipping time: 5 ± 0.5s No Visible Damage. IEC 60384-21/22 4.10 Vibration 5g's for 20 min., 12 cycles each of 3 orientations Note: Use 8"X5" PCB .031" thick 7 secure points on, one long side and 2 secure points at corners of opposite sides. Parts mounted within 2" from any secure point. Test from 10-2000 Hz. No Visible Damage.MIL-STD-202 Method 204 Mechanical Shock Three shocks in each direction shall be applied along the three mutually perpendicular axes of the test specimen (18 shocks) Peak value: 1,500g’s Duration: 0.5ms Velocity change: 15.4 ft/s Waveform: Half-sine No Visible Damage.MIL-STD-202 Method 213 Humidity Bias 1. Humidity: 85% R.H., Temperature: 85 ± 2 °C. 2. Time: 500 ± 24 hours. 3. Measurement at 24 ± 2hrs after test condition. No Visible Damage. Fulfill the electrical specification. MIL-STD-202 Method 106 Reliability Table HLX3216P2G45H5 Board Flex (SMD) 1. Mounting method: IR-Reflow. PCB Size (L:100 × W:40 × T:1.6mm) 2. Apply the load in direction of the arrow until bending reaches 2 mm. No Visible Damage. AEC-Q200 005 Adhesion Force of 1.8Kg for 60 seconds.No Visible Damage Magnification of 20X or greater may be employed for inspection of the mechanical integrity of the device body terminals and body/terminal junction. AEC-Q200 006 Physical Dimension Any applicable method using x10 magnification, micrometers, calipers, gauges, contour projectors, or other measuring equipment, capable of determining the actual specimen dimensions. In accordance with specification. JESD22 JB100 RevisionDate Content 1 2023/1/13 New issue Revision History HLX3216P2G45H5 561004 Helexun Technology Co., Ltd. Room 1004, Office Building, Jinhuan Yu Mansion No. 56 Tiezai Road, Bao'an District Shenzhen City, Guangdong Province, China