2AVD2-MH22237BLUETOOTH HEADPHONE

Shenzhen Monster Creative Technology Co., Ltd. 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: AOGES CO., LIMITED Contact Name: XIAOYAN LAI Address: 1624 Market St., Ste 226, #30327 Denver CO, 80202 US Telephone No: +1 303 623 1940 Email: [email protected] FRN: 0033947847 Applicant: Company name: Shenzhen Monster Creative Technology Co., Ltd. Product Description: BLUETOOTH HEADPHONE FRN: 0036280543 Grantee code: 2AVD2 FCC ID: 2AVD2-MH22237 Contact Name: Wang run long Address: Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Telephone No: 86-0755-27364448 Email: [email protected] [Shenzhen Monster Creative Technology Co., Ltd.] certifies that, as of the date of this filing of the application with the TCB, [AOGES CO., LIMITED] is our designated US agent for service of process for the above referenced FCC ID. [Shenzhen Monster Creative 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. [AOGES CO., LIMITED] 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. An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obligated to notify the FCC within 30 days via the granting TCB. Shenzhen Monster Creative Technology Co., Ltd. 1/1 Date: 2025.06.16 Applicant’s Name: Shenzhen Monster Creative Technology Co., Ltd. US Agent’s Name: AOGES CO., LIMITED Title:GM Title: General Manager Signature Wang runlong Signature XIAOYAN LAI

Attestation Statement. Old Code: C5266091 24 New Code: 00015544 Ed.3 Change reason: FRN is added to the Applicant information section. 1/1 Shenzhen Monster Creative Technology Co., Ltd. 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. Th is Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Shenzhen Monster Creative Technology Co., Ltd. Grantee code: 2AVD2 FRN: 0036280543 FCC ID: 2AVD2-MH22237 Contact Name: Wang run long Address: Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Telephone No: 86-0755-27364448 Fax No: Email: [email protected] i.[Shenzhen Monster Creative 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.[Shenzhen Monster Creative 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. [Shenzhen Monster Creative 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: 2025.06.16 Applicant’s Name: Wang run long Title: R & D 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

Shenzhen Monster Creative 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. 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 Device BLUETOOTH HEADPHONE Company name Shenzhen Monster Creative Technology Co., Ltd. Grantee code 2AVD2 FCC ID 2AVD2-MH22237 FRN 0036280543 Contact name run long. Wang Address Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Telephone number 18925204512 [email protected] Chipset/module information D1618T Operating System (if applicable) N/A Storage Capacity (hard drive or other permanent memory storage, if applicable) N/A 2 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 3 1 Storage: 150 MB free space N/A 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 3 RAM: 1 GB 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 ; After reviewed the technical requirements, is the device capable of supporting the installation of Kaspersky software? N/A N/A N/A 4 ☐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 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: run long. Wang Date: 2025.06.16 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

Shenzhen Monster Creative Technology Co., Ltd Product Similarity Declaration Product name: BLUETOOTH HEADPHONE Model name: MH22237, W51 FCC ID: 2AVD2-MH22237 We (Shenzhen Monster Creative 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 model name. Signature: Name: Wang run long Title: R & D Manager China, 2025.06.16

TCB CALL página 1 File FCC ID: 2AVD2-MH22237 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://www.sos.state.co.us/biz/BusinessEntityDetail.do?quitButtonDestination=BusinessEntityResults&nameTyp=ENT&masterFileId=20231625334&entityId2=20231625334&fileId=20231625334&srchTyp=ENTITY In google: TCB CALL página 2 TCB CALL página 3 TCB CALL página 4 TCB CALL página 5 ► 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" >

C5266091_X10_Ed.2 1/1 < Shenzhen Monster Creative Technology Co., Ltd. > Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2025.06.16 Subject: Request for Confidentiality FCC ID: 2AVD2-MH22237 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: Wang run long Title: R & D Manager

C5266091_X8_Ed.1 1/1 < Shenzhen Monster Creative Technology Co., Ltd. > Letter of Authorization Company: Shenzhen Monster Creative Technology Co., Ltd. Address: Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Product Name: BLUETOOTH HEADPHONE Model Number: MH22237, W51 FCC Identifier: 2AVD2-MH22237 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: Wang run long Date: 2025.06.16 Title: R & D Manager Signature of applicant:

Page 1 of 5 Report No.: STS2505114 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Photo 1 Photo 2 Page 2 of 5 Report No.: STS2505114 Photo 3 Photo 4 Page 3 of 5 Report No.: STS2505114 Photo5 Photo 6 Page 4 of 5 Report No.: STS2505114 Photo 7 Photo 8 Page 5 of 5 Report No.: STS2505114 Photo 9

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below: User Manual: Package:

Page 1 of 4 Report No.: STS2505114 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Photo 1 Photo 2 Page 2 of 4 Report No.: STS2505114 Photo 3 Photo 4 Page 3 of 4 Report No.: STS2505114 Photo 5 Photo 6 BT ANT BT ANT Page 4 of 4 Report No.: STS2505114 Photo 7 Photo 8

The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. MPE Report Report No.:STS2505114H01 Issued for Shenzhen Monster Creative Technology Co., Ltd. Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Product Name: BLUETOOTH HEADPHONE Brand Name: MONSTER Model Name: MH22237 Series Model(s): W51 FCC ID: 2AVD2-MH22237 Test Standards: FCC 47CFR §2.1093 Page 2 of 9 Report No.: STS2505114H01 TEST REPORT Applicant’s Name ................. : Shenzhen Monster Creative Technology Co., Ltd. Address ................................. : Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Manufacturer's Name ........... : Shenzhen Monster Creative Technology Co., Ltd. Address ................................. : Room 1602, 1601A2, 1601B, 1601C, Building A, Fencheng Zhigu Building, No. 60 Tiezai Road, Xixiang Street, Bao’an District, Shenzhen, China. Product Description Product Name ........................ : BLUETOOTH HEADPHONE Brand Name .......................... : MONSTER Model Name .......................... : MH22237 Series Model(s) ...................... : W51 Test Standards ..................... : FCC 47CFR §2.1093 447498 D04 Interim General RF Exposure Guidance v01 The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the ShenZhen STS Test Services Co., Ltd. Date of Test ........................................... : Date of receipt of test item ...................... : 16 May 2025 Date (s) of performance of tests ............. : 16 May 2025 ~22 May 2025 Date of Issue .......................................... : 22 May 2025 Test Result .............................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 9 Report No.: STS2505114H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1093 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 TEST RESULT 9 Page 4 of 9 Report No.: STS2505114H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 22 May 2025 STS2505114H01 ALL Initial Issue Page 5 of 9 Report No.: STS2505114H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name BLUETOOTH HEADPHONE Brand Name MONSTER Model Name MH22237 Series Model(s) W51 Model Difference Only the model names are different. Product Description The EUT is BLUETOOTH HEADPHONE Operation Frequency: 2402 – 2480 MHz Modulation Type: BT BR(1Mbps): GFSK BT EDR(2Mbps): π/4-DQPSK BT EDR(3Mbps): 8DPSK Antenna gain: 2.78dBi Antenna Designation: Ceramic Power Rating Input: DC 5V 0.5A Adapter N/A Battery Earphone： Model：FL400909 Rated Voltage: 3.7 V Charge Limit Voltage: 4.2 V Capacity: 25 mAh Charging Box: Model：PL601230 Rated Voltage: 3.7 V Charge Limit Voltage: 4.2 V Capacity: 180 mAh Hardware Version EAR: T01B56T2-V1 Software Version V3 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 9 Report No.: STS2505114H01 2. FCC 47CFR §2.1093 REQUIREMENT 2.1 TEST STANDARDS Follow the maximum permissible exposure (MPE) limits specified in 447498 D04 Interim General Radio Frequency Exposure Guidelines v01. The gain of the antenna used in the product was extracted from the supplied antenna data sheet and the maximum total power input to the antenna was also measured. Calculate the distance from the product to the MPE limit by the formula. 2.2 LIMIT For single RF sources (i.e., any single fixed RF source, mobile device, or portable device, as defined in paragraph (b)(2) of this section): A single RF source is exempt if: (A) The available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption may not be used in conjunction with other exemption criteria other than those in paragraph (b)(3)(ii)(A) of Part 1.1307. Medical implant devices may only use this exemption and that in paragraph (b)(3)(ii)(A); (B) Or the available maximum time-averaged power or effective radiated power (ERP), whichever is greater, is less than or equal to the threshold Pth (mW) described in the following formula. This method shall only be used at separation distances (cm) from 0.5 centimeters to 40 centimeters and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by: Page 7 of 9 Report No.: STS2505114H01 (C) Or using below table and the minimum separation distance (R in meters) from the body of a nearby person for the frequency (f in MHz) at which the source operates, the ERP (watts) is no more than the calculated value prescribed for that frequency. For the exemption in Table 1 to apply, R must be at least λ/2π, where λ is the free-space operating wavelength in meters. If the ERP of a single RF source is not easily obtained, then the available maximum time-averaged power may be used in lieu of ERP if the physical dimensions of the radiating structure(s) do not exceed the electrical length of λ/4 or if the antenna gain is less than that of a half-wave dipole (1.64 linear value). RF Source frequency (MHz) Threshold ERP(watts) 0.3-1.34 1,920 R 2 . 1.34-30 3,450 R 2 /f 2 . 30-300 3.83 R 2 . 300-1,500 0.0128 R 2 f. 1,500-100,000 19.2R 2 . Page 8 of 9 Report No.: STS2505114H01 For multiple RF sources: Multiple RF sources are exempt if: (A) The available maximum time-averaged power of each source is no more than 1 mW and there is a separation distance of two centimeters between any portion of a radiating…

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The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Radio Test Report Report No.:STS2505114W01 Issued for Shenzhen Monster Creative Technology Co., Ltd. Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Product Name: BLUETOOTH HEADPHONE Brand Name: MONSTER Model Name: MH22237 Series Model(s): W51 FCC ID: 2AVD2-MH22237 Test Standards: FCC Part15.247 Page 2 of 95 Report No.: STS2505114W01 TEST REPORT Applicant’s Name ................. : Shenzhen Monster Creative Technology Co., Ltd. Address .................................. : Room 1602, Building A, Fencheng Zhigu Building, Xixiang Street, Bao 'an District, Shenzhen, Guangdong, China Manufacturer's Name ........... : Shenzhen Monster Creative Technology Co., Ltd. Address .................................. : Room 1602, 1601A2, 1601B, 1601C, Building A, Fencheng Zhigu Building, No. 60 Tiezai Road, Xixiang Street, Bao’an District, Shenzhen, China. Product Description Product Name ........................ : BLUETOOTH HEADPHONE Brand Name ........................... : MONSTER Model Name ........................... : MH22237 Series Model(s) .................... : W51 Standards ............................. : FCC Part15.247 Test Procedure ....................... : ANSI C63.10-2020 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. The test results presented in this report relate only to the object tested. This report shall not be reproduced, except in full, without the written approval of the Shenzhen STS Test Services Co., Ltd. Date of Test ............................... : Date of receipt of test item ......... : 16 May 2025 Date (s) of performance of tests : 16 May 2025 ~22 May 2025 Date of Issue ............................. : 22 May 2025 Test Result ................................. : Pass Testing Engineer : (Aaron Bu) Technical Manager : (Skylar Li) Authorized Signatory : (Bovey Yang) Page 3 of 95 Report No.: STS2505114W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 12 2.5 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 12 2.6 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 13 2.7 EQUIPMENTS LIST 14 3. EMC EMISSION TEST 15 3.1 CONDUCTED EMISSION MEASUREMENT 15 3.2 RADIATED EMISSION MEASUREMENT 19 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 31 4.1 LIMIT 31 4.2 TEST PROCEDURE 31 4.3 TEST SETUP 32 4.4 EUT OPERATION CONDITIONS 32 4.5 TEST RESULTS 32 5. NUMBER OF HOPPING CHANNEL 33 5.1 LIMIT 33 5.2 TEST PROCEDURE 33 5.3 TEST SETUP 33 5.4 EUT OPERATION CONDITIONS 33 5.5 TEST RESULTS 33 6. AVERAGE TIME OF OCCUPANCY 34 6.1 LIMIT 34 6.2 TEST PROCEDURE 34 6.3 TEST SETUP 34 6.4 EUT OPERATION CONDITIONS 34 6.5 TEST RESULTS 34 7. HOPPING CHANNEL SEPARATION MEASUREMEN 35 7.1 LIMIT 35 Page 4 of 95 Report No.: STS2505114W01 Table of Contents Page 7.2 TEST PROCEDURE 35 7.3 TEST SETUP 35 7.4 EUT OPERATION CONDITIONS 35 7.5 TEST RESULTS 35 8. BANDWIDTH TEST 36 8.1 LIMIT 36 8.2 TEST PROCEDURE 36 8.3 TEST SETUP 36 8.4 EUT OPERATION CONDITIONS 36 8.5 TEST RESULTS 36 9. OUTPUT POWER TEST 37 9.1 LIMIT 37 9.2 TEST PROCEDURE 37 9.3 TEST SETUP 38 9.4 EUT OPERATION CONDITIONS 38 9.5 TEST RESULTS 38 10. ANTENNA REQUIREMENT 39 10.1 STANDARD REQUIREMENT 39 10.2 EUT ANTENNA 39 APPENDIX 1-TEST DATA 40 APPENDIX 2-PHOTOS OF TEST SETUP 95 Page 5 of 95 Report No.: STS2505114W01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 22 May 2025 STS2505114W01 ALL Initial Issue Page 6 of 95 Report No.: STS2505114W01 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- Note: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Page 7 of 95 Report No.: STS2505114W01 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : 101, Building B, Zhuoke Science Park, No.190 Chongqing Road, ZhanChengShequ, Fuhai Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.755dB 2 Unwanted Emissions, conducted ±2.874dB 3 All emissions, radiated 9K-30MHz ±3.80dB 4 All emissions, radiated 30M-1GHz ±4.18dB 5 All emissions, radiated 1G-6GHz ±4.90dB 6 All emissions, radiated>6G ±5.24dB 7 Conducted Emission (9KHz-150KHz) ±2.19dB 8 Conducted Emission (150KHz-30MHz) ±2.53dB 9 Occupied Channel Bandwidth ±3.5% 10 Dwell time ±3.2% Page 8 of 95 Report No.: STS2505114W01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name BLUETOOTH HEADPHONE Brand Name MONSTER Model Name MH22237 Series Model(s) W51 Model Differe…

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SMD CERAMIC ANTENNA Data Sheet For 2400-2500MHz 1.6x0.8x0.4mm [EIA1608] CS-2450-16-A HZ1608WA01 C3,buildingA1,RedBoxCreativeGarden,11HuanchengSouth Road, Ma'anTangcommunity,BantianStreet,LonggangDistrict, Shenzhen. Shenzhen Haizhe Technology Co., Ltd. Feature nLight weight, compact nWide bandwidth, low cost nBuilt-in antenna with high gain nOperating Temp. : -40°C~+85°C Application nBluetooth nWLAN 2.4 nWiFi 5/6/6E nUWB CS-2450-16-A Electrical Characteristics per line(TA=25°C) Parameter Specification Units Frequency Band 2400~2500 MHz Polarization Linear *Peak Gain 2.78 dBi *Peak Efficiency 80.25 % Impendance 50 Ω Test condition: Test board size 70*60 mm; Matching circuit: Pi matching circuit will be required. Product Dimension Units:mm W A L A H LWHA 1.60±0.200.80±0.200.40±0.100.2±0.07 Recommend PCB Layout1 Test condition: Test board size 70*60 mm; Top Layer (unit mm) Bottom Layer (unit mm) Feeding line:50Ω E1(0201) 1.5 3.5 1.0 0.5 0.5 0.5 2.0 E2(0201) 1.5 3.5 2.0 E3(0201) 0.5 ANT 1.1 Note:The spacing between antenna pads should not be ＜ 1.1mm 注意:天线焊盘内间距不能＜1.1mm 6.5 6.5 1.1 0.5 0.8 Recommend PCB Layout2 Test condition: Test board size 70*60 mm; Top Layer (unit mm) Bottom Layer (unit mm) Feeding line:50Ω E1(0201) 1.5 2.0 0.5 0.5 0.5 10 1.5 10 E2(0201) E3(0201) 0.5 Note:The spacing between antenna pads should not be ＜ 1.1mm 注意:天线焊盘内间 距不能＜1.1mm 1 . 1 1.1 0.5 0.8 ANT PAD E2(0201) 2.0 1.5 Typical Characteristics Fig. 1 Return Loss Radiation Pattern The Gain pattern is measured in FAR -field chamber. DUT is placed on the table of rotator , a standard horn antenna and Vector Network Analyzer is used to collect data. Fig.2 FAR-field Chamber Equivalent circuit: RF chip ANT E1 E2 E3 Frequency 2400MHz2450MHz2500MHz Avg. gain - 1.92- 1.35- 1.56 Peak gain 1.792.782.66 Efficiency 74.5580.2576.98 Radiation Performance: 2D Gain Pattern X-Y Plane Y-Z Plane X-Z Plane 2450MHz Item Condition Specification Thermal shock 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 No apparent damage Fulfill the electrical spec. after test. Humidity resistance 1. Humidity: 85% R.H. 2 . Temperature: 85±5 ° C 3 . Time: 1000 hours . No apparent damage Fulfill the electrical spec. after test. High temperature resistance No apparent damage Fulfill the electrical spec. after test. 1 . Temperature: 150 ° C±5 ° C 2 . Time: 1000 hours . Low temperature resistance 1 . Temperature: -40 ° C±5 ° C 2 . Time: 1000 hours . No apparent damage Fulfill the electrical spec. after test. Soldering heat resistance 1. Solder bath temperature : 260±5°C 2. Bathing time: 10±1 seconds No apparent damage Solderability 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 (2) Storage Condition (a)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 elivery. (b)On board: The temperature should be within -40 ~85°C and humidity should be less than 85% RH. ( 3) Operating Temperature Range Operating temperature range : -40°C to +85°C . Recommended Reflow Solder curve External Dimensions L*W (mm) 1.6*0.8 Central Frequency 2450 MHz Product Series: Chip Antenna Marking Part Number System CS - 2450 - 16-A Package Information ( 1) Soldering Gun Procedure Note the follows, in case of using solder gun for replacement. (a) The tip temperature must be less than 350°C for the period within 3 seconds by using soldering gun under 30 W. (b…

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