2AON7-30741AIR CONDUCTING HEADPHONES

TZUMI Electronics,LLC Code 00018768 Ed. 2 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. 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 Device AIR CONDUCTING HEADPHONES Company name TZUMI Electronics,LLC Grantee code 2AON7 FCC ID 2AON7-30741 FRN 0027104157 Contact name Ezra Azar Address 16 EAST 34TH STREET 16TH FLOOR, NEW YORK, United States,10016 Telephone number 212-689-6008 E-mail [email protected] Chipset/module information AB5656D3 Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 # 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 2 Operating System: iOS® 17 N/A 3 # 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. ☒ No. In this case, the rest of the items do not apply. The device cannot support installation of Kaspersky software 4 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: Ezra Azar Date: 1/20/2026 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

TZUMI Electronics,LLC Product Similarity Declaration Product name: AIR CONDUCTING HEADPHONES Model name: EBB2-250019A, 30741 FCC ID: 2AON7-30741 We (TZUMI Electronics,LLC) 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 model name. Signature: Name: Ezra Azar Title: Foreign trade sales Date: 1/20/2026

TCB CALL página 1 File FCC ID: 2AON7-30741 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 : In google: ► 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" TCB CALL página 2 >

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: ARGENTO SC BY SICURA INC FRN: 0031164072 Contact Name: Zara Zhou Address: 420 5th Avenue 15th Floor New York, NY 10018 Telephone No: 212-704-2006 Email: [email protected] Applicant: Company name: TZUMI Electronics,LLC FRN: 0027104157 Product Description: AIR CONDUCTING HEADPHONES Grantee code: 2AON7 FCC ID: 2AON7-30741 Contact Name: Ezra Azar Address: 16 EAST 34TH STREET 16TH FLOOR, NEW YORK, United States, 10016 Telephone No: 212-689-6008 Email: [email protected] [TZUMI Electronics,LLC] certifies that, as of the date of this filing of the application with the TCB, [ ARGENTO SC BY SICURA INC] is our designated US agent for service of process for the above referenced FCC ID. [TZUMI Electronics,LLC] 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. [ARGENTO SC BY SICURA INC] 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: 01.13.2026 Applicant’s Name: Ezra Azar US Agent’s Name: Zara Zhou Title: Foreign trade sales Title: Compliance 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: TZUMI Electronics,LLC Grantee code: 2AON7 FCC ID: 2AON7-30741 FRN: 0027104157 Contact Name: Ezra Azar Address: 16 EAST 34TH STREET 16TH FLOOR, NEW YORK, United States, 10016 Telephone No: 212-689-6008 Fax No: 212-684-3622 Email: [email protected] i. [TZUMI Electronics,LLC] (“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. [TZUMI Electronics,LLC] (“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. TZUMI Electronics,LLC 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: 01.20.2026 Applicant’s Name: Ezra Azar Title: Foreign trade sales 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

C5266091_X10_Ed.2 1/1 TZUMI Electronics,LLC Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 1/20/2026 Subject: Request for Confidentiality FCC ID: 2AON7-30741 To Whom It May Concern, Pursuant 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 ______ 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: Ezra Azar Title: Foreign trade sales

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: TZUMI Electronics,LLC Address: 16 EAST 34TH STREET 16TH FLOOR, NEW YORK, United States, 10016 Product Name: AIR CONDUCTING HEADPHONES Model Number: EBB2-250019A, 30741 FCC Identifier: 2AON7-30741 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: Ezra Azar Date: 1/20/2026 Title: Foreign trade sales Signature of applicant:

Page 1 of 4 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the EUT (External Photos) Model: EBB2-250019A Page 2 of 4 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 3 of 4 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Page 4 of 4 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]

Logo Colors Cool Gray 8 C FCC ID: 2AON7-30741 S/N: ET2495530741 FCC ID: 2AON7-30741 S/N: ET2495530741

Page 1 of 3 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the EUT (Internal Photos) Model: EBB2-250019A Page 2 of 3 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] ANT Page 3 of 3 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected]

Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FC028 Ver./Rev.：A1 Page 1 of 6 RF EXPOSURE Test Report Report No. : MTi251127016-0104E2 Date of Issue : 2025-12-05 Applicant : TZUMI Electronics,LLC Product : AIR CONDUCTING HEADPHONES Model(s) : EBB2-250019A, 30741 FCC ID : 2AON7-30741 Shenzhen Microtest Co., Ltd. TEST REPORT Report No.: MTi251127016-0104E2 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 2 of 6 Table of contents 1 Standalone SAR test exclusion considerations .............................................................. 4 2 SAR Test Exclucsion Thresholds ..................................................................................... 5 TEST REPORT Report No.: MTi251127016-0104E2 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 3 of 6 Test Result Certification Applicant TZUMI Electronics,LLC Applicant Address 16 EAST 34TH STREET 16TH FLOOR, NEW YORK, United States,10016 Manufacturer HONG KONG ETECH GROUPS LIMITED Manufacturer Address ROOM1123, 11/F., STARHOUSE, 3SALISBURYROAD, TSIMSHATSUI, HONGKONG, China Product description Product name AIR CONDUCTING HEADPHONES Trademark N/A Model name EBB2-250019A Series Model(s) 30741 Standards 47 CFR Part 2.1093 Test Method KDB 447498 D01 v06 Testing Information Date of test 2025-12-01 to 2025-12-03 Test result Pass Prepared by: Maleah Deng Reviewed by: David Lee Approved by: Lewis Lian TEST REPORT Report No.: MTi251127016-0104E2 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 4 of 6 1 Standalone SAR test exclusion considerations 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. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance defined in 4.1 f) is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander. To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified, typically in the SAR measurement or SAR analysis report, by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting are required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for SAR test exclusion. When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions. a) 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  The values 3.0 and 7.5 are referred to as numeric thresholds in step b) below The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1 f) is applied to determine SAR test exclusion. b) 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 (also illustrated in Appendix B): 1) {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance – 50 mm)·(f(MHz)/150)]} mW, for 100 MHz to 1500 MHz 2) {[Power allowed at numeric threshold for 50 mm in step a)] + [(test separation distance – 50 mm)·10]} mW, for > 1500 MHz and ≤ 6 GHz c) For frequencies below 100 MHz, the following may be considered for SAR test exclusion (also illustrated in Appendix C): 1) For test separation distances > 50 mm and < 200 mm, the power threshold at the corresponding test separation distance at 100 MHz in step b) is multiplied by [1 + log(100/f(MHz))] TEST REPORT Report No.: MTi251127016-0104E2 Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web:http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an Distri…

Text truncated - open the document above for the full version.

Tel:0755-88850135-1439 Mobile: 131-4343-1439（Wechat same number） Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 1 of 84 Test Report Report No. : MTi251127016-0104E1 Date of issue : 2025-12-05 Applicant : TZUMI Electronics,LLC Product : AIR CONDUCTING HEADPHONES Model(s) : EBB2-250019A, 30741 FCC ID : 2AON7-30741 Shenzhen Microtest Co., Ltd. TEST REPORT Report No.: MTi251127016-0104E1 Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 2 of 84 Table of contents 1 General Description ..................................................................................................................... 4 1.1 Description of the EUT ........................................................................................................ 4 1.2 Description of test modes.................................................................................................... 4 1.3 Environmental Conditions ................................................................................................... 6 1.4 Description of support units ................................................................................................ 6 1.5 Measurement uncertainty.................................................................................................... 6 2 Summary of Test Result .............................................................................................................. 7 3 Test Facilities and accreditations ............................................................................................... 8 3.1 Test laboratory ..................................................................................................................... 8 4 List of test equipment .................................................................................................................. 9 5 Evaluation Results (Evaluation) ............................................................................................... 11 5.1 Antenna requirement .......................................................................................................... 11 6 Radio Spectrum Matter Test Results (RF) ............................................................................... 12 6.1 20dB Bandwidth ................................................................................................................ 12 6.2 Maximum Conducted Output Power ................................................................................. 14 6.3 Channel Separation .......................................................................................................... 16 6.4 Number of Hopping Frequencies ...................................................................................... 18 6.5 Dwell Time ......................................................................................................................... 20 6.6 RF conducted spurious emissions and band edge measurement ................................... 22 6.7 Band edge emissions (Radiated) ...................................................................................... 24 6.8 Radiated emissions (below 1GHz).................................................................................... 27 6.9 Radiated emissions (above 1GHz) ................................................................................... 31 Photographs of the test setup ......................................................................................................... 35 Photographs of the EUT ................................................................................................................... 36 Appendix A: 20dB Emission Bandwidth ......................................................................................... 38 Appendix B: Maximum conducted output power .......................................................................... 44 Appendix C: Carrier frequency separation ..................................................................................... 50 Appendix D: Time of occupancy ..................................................................................................... 53 Appendix E: Number of hopping channels .................................................................................... 61 Appendix F: Band edge measurements ......................................................................................... 64 Appendix G: Conducted Spurious Emission ................................................................................. 70 TEST REPORT Report No.: MTi251127016-0104E1 Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong,China Q/MTI-QP-12-FE038 Ver./Rev.：A1 Page 3 of 84 Test Result Certification Applicant TZUMI Electronics,LLC Applicant Address 16 EAST 34TH STREET 16TH FLOOR, NEW YORK, United States,10016 Manufacturer HONG KONG ETECH GROUPS LIMITED Manufacturer Address ROOM1123, 11/F., STARHOUSE, 3SALISBURYROAD, TSIMSHATSUI, HONGKONG, China Product description Product name AIR CONDUCTING HEADPHONES Trademark N/A Model name EBB2-250019A Series Model(s) 30741 Standards 47 CFR Part 15.247 Test Method KDB 558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10-2020 Testing Information Date of test 2025-12-01 to 2025-12-03 Test result Pass Prepared by: Maleah Deng Reviewed by: David Lee Approved by: Lewis Lian TEST REPORT Report No.: MTi251127016-0104E1 Tel: 0755-88850135-1439 Mobile: …

Text truncated - open the document above for the full version.

Summary Meander Line Specification ITEM ANT SPEC Model Name 2.4G ANT MAX. Gain -0.58dBi Azimuth Beam Pattern Omni-directional Impedance 8.45-j22.5 Manufacture Shenzhen Vmart Electronics Science and Technology Co., Ltd. / Mong Kok, Kowloon, Hong Kong 33 Mong Kok Road, Bright Way Tower, Rm 704, 7/F Antenna Photo & Length (mm) Frequency: 2450 MHz Gain Unit: dBi Max: 0 Min: -5 Scale: 1/div ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Page 1 of 2 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Photographs of the test setup Model: EBB2-250019A 20dB Bandwidth Maximum Conducted Output Power Channel Separation Number of Hopping Frequencies Dwell Time RF conducted spurious emissions and band edge measurement Page 2 of 2 Report No.: MTi251127016-0104 Address: 101, No. 7, Zone 2, Xinxing Industrial Park, Fuhai Avenue, Xinhe Community, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China. Tel: 0755-88850135-1439 Mobile: 131-4343-1439 (Wechat same number) Web: http://www.mtitest.cn E-mail: [email protected] Radiated emissions (above 1GHz) Radiated emissions (below 1GHz)