2BSIR-INFINITUNESInfinitunes - Wireless Speaker and Wireless Charger

BEST Promo USA 201 Clay Rd. Suite 200 Sunnyvale Texas 75182 United States 1 | P a g e Attestation Statements To: Federal Communications Commission Date: Jan. 27, 2026 7435 Oakland Mills Road, Columbia, MD 21046, USA Subject: Attestation of Compliance with FCC Covered List Software Requirements FCC ID: 2BSIR-INFINITUNES Product Name: Infinitunes - Wireless Speaker and Wireless Charger This letter serves as an attestation that the equipment identified above ☐ is / ☒ is not (select one) "covered" software as defined under the Federal Communications Commission (FCC) Covered List requirements, as outlined in FCC 22-84 and KDB 986446. Specifically, the undersigned certifies that the equipment for which authorization is sought: 1. Does not contain cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors, assignees, parents, subsidiaries, affiliates, or any entity that has rebranded or relabeled software produced by the aforementioned entities. 2. Does not have the capability to store, run, or deliver any software identified on the FCC Covered List, including but not limited to cybersecurity and anti-virus software. To support this attestation, the appendix evaluation documentation has been prepared and is included in the certification filing. This attestation is based on a thorough evaluation of the device's design, functionality, and software environment. The undersigned affirms that the information provided is accurate and complete to the best of their knowledge. Sincerely yours, Applicant Signature Printed Name: Kathy Rasmussen Title: Sr. Product Manager Address: 201 Clay Rd. Suite 200 Sunnyvale Texas 75182 United States Tel.: (801) 592-9973 Email: [email protected] BEST Promo USA 201 Clay Rd. Suite 200 Sunnyvale Texas 75182 United States 2 | P a g e Evaluation regarding to the Covered List Software: Compliance Methodology Evaluation Process Results Device is Inherent compliance ☒ The Chipset(s) used is limited to run the Cybersecurity or anti-virus software. Compliance ☐ The Memory used is limited to run the Cybersecurity or anti-virus software. Compliance ☐ There is storage capacity limitation for store or install the Cybersecurity or anti-virus software. Compliance ☐ Operating system used is limited to run, install or deliver the Cybersecurity or anti-virus software. Compliance Device is not Inherent compliance ☐ Evaluation Based on Software Bill of Materials (SBoM) See attached “SBoM“ Note:The SBoM content is limited to the scope of covered list software (e.g. antivirus and cybersecurity software). ☐ Evaluation Based on Scan for Software on the device ☐ Evaluation Based on Filesystem scan ☐ Evaluation Based on Running software check

BEST Promo USA 201 Clay Rd. Suite 200 Sunnyvale Texas 75182 United States Jan. 27, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization for FCC ID: 2BSIR-INFINITUNES I, the undersigned, hereby authorize (Attestation of Global Compliance (Shenzhen) Co., Ltd) to act on our behalf in all matters relating to this application for equipment certification. Any act carried out by (Attestation of Global Compliance (Shenzhen) Co., Ltd) shall have the same effect as our own and I acknowledge that all responsibility for complying with the terms and conditions of certification, as specified by DERYCOM CERTIFICATION SERVICES, INC., still resides with BEST Promo USA. We certify that we are not subject to a denial of federal benefits that includes FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. §862, and that no party to the application, as defined in 47 CFR §1.2002(b), is subject to a denial of federal benefits that includes FCC benefits pursuant to that section. Sincerely, (Signature) Full name of contact person listed on FCC’s website: Kathy Rasmussen Title: Sr. Product Manager Tel.: (801) 592-9973 Email: [email protected]

FCC ID Label Location 20mm*30mm FCC ID: 2BSIR-INFINITUNES

Page 1 of 17 RF Exposure Report Report No.: AGC09477251201FH01 FCC ID : 2BSIR-INFINITUNES APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Infinitunes - Wireless Speaker and Wireless Charger BRAND NAME : N/A MODEL NAME : 701253 APPLICANT : BEST Promo USA DATE OF ISSUE : Jan. 27, 2026 STANDARD(S) : 47 CFR FCC Part 2.1091 KDB 680106 D01 v04 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC09477251201FH01 Page 2 of 17 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jan. 27, 2026 Valid Initial Release Report No.: AGC09477251201FH01 Page 3 of 17 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 2.2 DUT Coil and Size Information ................................................................................................................. 5 2.3 Related Submittal(S)/Grant (S) ................................................................................................................. 6 2.4 Test Methodology ...................................................................................................................................... 6 2.5 Equipment Approval Considerations ......................................................................................................... 6 3. Test Environment ............................................................................................................................................ 7 3.1 Address of The Test Laboratory ................................................................................................................ 7 3.2 Test Facility ................................................................................................................................................ 7 3.3 Environmental Conditions ......................................................................................................................... 8 3.4 Measurement Uncertainty ......................................................................................................................... 8 3.5 List of Equipment Used ............................................................................................................................. 8 4.System Test Configuration .............................................................................................................................. 9 4.1 Configuration of Tested System ................................................................................................................ 9 4.2 Equipment Used in Tested System .......................................................................................................... 9 5. Description of Test Modes ........................................................................................................................... 10 6. Maximum Permissible Exposure ................................................................................................................. 11 6.1 Test Limits ................................................................................................................................................ 11 6.2 Test Setup (Block Diagram of Configuration).......................................................................................... 12 6.3 Test Procedures ...................................................................................................................................... 13 6.4 Test Result ............................................................................................................................................... 15 Appendix I: Photographs of Test Setup .......................................................................................................... 16 Appendix II: Photographs of Test EUT ........................................................................................................... 16 Report No.: AGC09477251201FH01 Page 4 of 17 1. General Information Applicant BEST Promo USA Address 201 Clay Rd. Suite 200 Sunnyvale Texas 75182 United States Manufacturer E-TRENDS ELECTRONIC CO.,LTD Address No.9 Building, Huixin Industrial Park, Yangwu village, Dalingshan Town, Dongguan, Guangdong, China Factory E-TRENDS ELECTRONIC CO.,LTD Address No.9 Building, Huixin Industrial Park, Yangwu village, Dalingshan Town, Dongguan, Guangdong, China Product Designation Infinitunes - Wireless Speaker and Wireless Charger Brand Name N/A Test Model 701253 Series Model(s) N/A Difference Description N/A Date of receipt of test item Dec. 02, 2025 Date of Test Dec. 02, 2025 to Jan. 27, 2026 Deviation from Standard No any deviation from the test method Condition of Test Sample Normal Test Result Pass Test Report Form No AGCER-FCC-RFE-V1 Note: The test results of this report relate only to the tested sample identified in this report. Prepared By Sam Zheng (Project Engineer) Jan. 27, 2026 Reviewed By Bibo Zhang (Reviewer) Jan. 27, 2026 Approved By Angela Li (Authorized Officer) Jan. 27, 2026 Report No.: AGC09477251201FH01 Page 5 of 17 2. Product Information 2.1 Product Technical Description Operation Frequency Band 110.5kHz-205kHz Hardware Version HF-M319-66-V1 Software Version HF-M319_KMS_AC6966B_(Monitor Speaker)_85BF-206C7415 Modulation Type ASK Antenna Designation Coil Antenna Input Rating DC 5V/2A, DC 9V/2A Output Rating 5/7.5/10/15W MAX 2.2 DUT Coil and Size Information WPT Band Output Power for Each Coil 5W/7.5W/10W/15W Max Distance to transmitter: Top: 4mm; Bottom: 112mm; Left: 92mm; Right: 92mm; Front:48mm; Rear:25mm DUT…

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

WPT Band Output Power for Each Coil 5W/7.5W/10W/15W Max Distance to transmitter: Top: 4mm; Bottom: 112mm; Left: 92mm; Right: 92mm; Front:48mm; Rear:25mm DUT Size Unit: mm A B C D E F G H 20±0.5 20.5±0 .5 39.5±1 42.9±0. 5 7±2 3±1 0.95±0. 05 2.7M AX Manufacturer (Mfrs.): Dongguan Yinze Technology company Company Address: Dongguan ChashanTown Xinghan RD No2 Building 901

Page 1 of 31 FCC Test Report Report No.: AGC09477251201FR02 FCC ID : 2BSIR-INFINITUNES APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Infinitunes - Wireless Speaker and Wireless Charger BRAND NAME : N/A MODEL NAME : 701253 APPLICANT : BEST Promo USA DATE OF ISSUE : Jan. 27, 2026 STANDARD(S) : FCC Part 15 Subpart C REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC09477251201FR02 Page 2 of 31 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Jan. 27, 2026 Valid Initial Release Report No.: AGC09477251201FR02 Page 3 of 31 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 2.2 Related Submittal(S) / Grant (S) ............................................................................................................... 6 2.3 Test Methodology ...................................................................................................................................... 6 2.4 Special Accessories .................................................................................................................................. 6 2.5 Equipment Modifications ........................................................................................................................... 6 2.6 Antenna Requirement................................................................................................................................ 6 3. Test Environment ............................................................................................................................................ 7 3.1 Address of The Test Laboratory ................................................................................................................ 7 3.2 Test Facility ................................................................................................................................................ 7 3.3 Environmental Conditions ......................................................................................................................... 8 3.4 Measurement Uncertainty ......................................................................................................................... 8 3.5 List of Equipment Used ............................................................................................................................. 9 4. System Test Configuration ........................................................................................................................... 10 4.1 EUT Configuration ................................................................................................................................... 10 4.2 EUT Exercise ........................................................................................................................................... 10 4.3 Configuration of Tested System .............................................................................................................. 10 4.4 Equipment Used in Tested System ......................................................................................................... 11 4.5 Summary of Test Results ........................................................................................................................ 12 5. Description of Test Modes ........................................................................................................................... 13 6. Field Strength of Fundamental .................................................................................................................... 14 6.1 Measurement Limits ................................................................................................................................ 14 6.2 Measurement Procedure ......................................................................................................................... 15 6.3 Field Strength Calculation ....................................................................................................................... 16 6.4 Measurement Setup ................................................................................................................................ 17 6.5 Measurement Result ............................................................................................................................... 18 7. -20 dB Bandwidth Measurement ................................................................................................................. 24 7.1 Provisions Applicable .............................................................................................................................. 24 7.2 Measurement Procedure ......................................................................................................................... 24 7.3 Measurement Setup ................................................................................................................................ 24 7.4 Measurement Result ............................................................................................................................... 24 8. AC Power Line Conducted Emission Test .................................................................................................. 26 8.1 Measurement Limits ................................................................................................................................ 26 8.2 Measurement Setup ................................................................................................…

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