K7SAUD013SoundForm Youth ANC Over-Ear Headphones

Belkin International, Inc. Covered Equipment Certification Attestation Letter 5/13/2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: K7SAUD013 Belkin International, Inc. (“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. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Belkin International, Inc. (“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. Belkin International, Inc. (“the applicant”) certifies that the equipment for which authorization issought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity oranti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Signed: Printed name: Rossi Wu Title: Senior Regulatory Compliance Engineer Company Name: Belkin International, Inc Date: 5/13/2026

Belkin International, Inc. * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter May 13, 2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: K7SAUD013 Per section 2.911(d)(7) of the FCC rules, Belkin International, Inc. (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. Designated agent* for service of process: Company Name: Belkin International, Inc. Physical U.S. Company Address: 555 S. Aviation Blvd., Suite 180, El Segundo, CA 90245, USA Agent name: Jay Tu Agent Email Address: [email protected] FRN: 0008128605 The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Designated Agent Signed: (Required, if different to Applicant): Signed: Signed: Printed name: Rossi Wu Printed name: Rossi Wu Title: Senior Regulatory Compliance Engineer Title: Senior Regulatory Compliance Engineer Company Name: Belkin International, Inc. Company Name: Belkin International, Inc. Date: May 13, 2026 Date: May 13, 2026 FRN Code: 0008128605 FRN Code: 0008128605

Belkin International, Inc. 5/13/2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 AUTHORITY TO ACT AS AGENT - FCC On our behalf, I appoint Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch and No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in FCC regulations will have affixed to it a label identical to that submitted for approval with this application. In signing this letter, Applicant certifies that neither the applicant nor any party to the application is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America Inc., still resides still resides with us. Sincerely, Printed name: Rossi Wu Title: Senior Regulatory Compliance Engineer

Power of Attorney Date: Jan. 10, 2022 To whom it may concern: I, the undersigned, Jay Tu, hereby authorize the person listed below to act in behalf of me to sign all related documents for Belkin International, Inc.’s FCC/IC application. Name: Zack Vogel / Regulatory Compliance Engineer, Regulatory Compliance Tel: +1 800-223-5546 E-mail: [email protected] Name: Andrei Moldavanov / Regulatory Compliance Engineer, Regulatory Compliance E-mail: [email protected] Name: Rossi Wu / Senior Regulatory Compliance Engineer, Regulatory Compliance Tel: +1 310 633 9309 # 2960 E-mail: [email protected] Name: Daisy Dai / Regulatory Compliance Engineer, Regulatory Compliance Tel: O +86 755 2387 1039 E-mail: [email protected] Respectfully, Applicant’s company name: Belkin International, Inc. Applicant’s company address: 555 S. Aviation Blvd., Suite 180, El Segundo, CA 90245-4852, USA Signature Name and Job Title: Jay Tu / Manager, Regulatory Compliance

Belkin International, Inc. May 13, 2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: K7SAUD013 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period 180 days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Rossi Wu Title: Senior Regulatory Compliance Engineer Company Name: Belkin International, Inc.

Label and Label location

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 6 Report Version 1 Test Report No.: FM2604WDG0144 RF EXPOSURE REPORT Applicant Belkin International, Inc. Address 555 S. Aviation Blvd., Suite 180, El Segundo, CA 90245, USA Manufacturer or Supplier Belkin International, Inc. Address 555 S. Aviation Blvd., Suite 180, El Segundo, CA 90245, USA Product SoundForm™ Youth ANC Over-Ear Headphones Brand Name belkin Model AUD013 Additional Model & Model Difference N/A Date of tests Apr. 10, 2026 ~ May 11, 2026 FCC Part 2 (Section 2.1093) KDB 447498 D01 V06 IEEE C95.1 CONCLUSION: The submitted sample was found to COMPLY with the test requirement Prepared by Eric Fang Project Engineer / EMC Department Approved by Glyn He Assistant Manager / EMC Department Date: May 15, 2026 This report is governed by, and incorporates by reference, the Conditions of Testing as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our-business/cps/about-us/terms-conditions/ and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. Statements of conformity are based on simple acceptance criteria without taking measurement uncertainty into account, unless otherwise requested in writing. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 6 Report Version 1 Test Report No.: FM2604WDG0144 TABLE OF CONTENTS RELEASE CONTROL RECORD ................................................................................ 3 1. CERTIFICATION .............................................................................................. 4 2. RF EXPOSURE DEFINE ................................................................................. 5 3. CLASSIFICATION ........................................................................................... 5 4. CALCULATED RESULT OF MAXIMUM CONDUCTED POWER .................... 6 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 3 of 6 Report Version 1 Test Report No.: FM2604WDG0144 RELEASE CONTROL RECORD ISSUE NO. REASON FOR CHANGE DATE ISSUED FM2604WDG0144 Original release May 15, 2026 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 4 of 6 Report Version 1 Test Report No.: FM2604WDG0144 1. CERTIFICATION FCC ID: K7SAUD013 PRODUCT: SoundForm™ Youth ANC Over-Ear Headphones BRAND NAME: belkin MODEL NO.: AUD013 ADDITIONAL NO.: N/A APPLICANT: Belkin International, Inc. STANDARDS: FCC Part 2 (Section 2.1093) KDB 447498 D01 V06 IEEE C95.1 Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 5 of 6 Report Version 1 Test Report No.: FM2604WDG0144 2. RF EXPOSURE DEFINE The corresponding SAR Exclusion Threshold condition, listed below: 1) The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(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,16 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 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 is applied to determine SAR test exclusion. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)·( f(MHz)/150)] mW, at 100MHz to 1500 MHz b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)·10] mW at > 1500 MHz and ≤ 6 GHz 3) At frequencies below …

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Antenna Specification Antenna Type: PCB On-board Antenna PCB Manufacturer: Dongguan HANK Electronics.,LTD Manufacturer address: 118 Shaxin Road, Tangxia Town, Dongguan City, Guangdong Province, China Model: H56 Freq(MHz) Effi(%) Effi(dB) Gain(dBi) 2400 66.14 -1.8 2.08 2410 63.67 -1.96 2.05 2420 59.57 -2.25 1.8 2430 60.47 -2.18 1.91 2440 60.46 -2.18 1.99 2450 58.05 -2.36 1.87 2460 57.84 -2.38 1.81 2470 52.61 -2.79 1.2 2480 55.74 -2.54 1.53

Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 1 of 53 Report Version 1 Test Report No.: RF2604WDG0144 TEST REPORT Applicant Belkin International, Inc. Address 555 S. Aviation Blvd., Suite 180, El Segundo, CA 90245, USA Manufacturer or Supplier Belkin International, Inc. Address 555 S. Aviation Blvd., Suite 180, El Segundo, CA 90245, USA Product SoundForm™ Youth ANC Over-Ear Headphones Brand Name belkin Model AUD013 Additional Model & Model Difference N/A Date of tests Apr. 10, 2026 ~ May 11, 2026 the tests have been carried out according to the requirements of the following standards: FCC Part 15, Subpart C, Section 15.247 CONCLUSION: The submitted sample was found to COMPLY with the test requirement Prepared by Eric Fang Project Engineer / EMC Department Approved by Glyn He Assistant Manager / EMC Department Date: May 15, 2026 This report is governed by, and incorporates by reference, the Conditions of Testing as posted at the date of issuance of this report at http://www.bureauveritas.com/home/about-us/our-business/cps/about-us/terms-conditions/ and is intended for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. Measurement uncertainty is only provided upon request for accredited tests. Statements of conformity are based on simple acceptance criteria without taking measurement uncertainty into account, unless otherwise requested in writing. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence or if you require measurement uncertainty; provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Bureau Veritas Shenzhen Co., Ltd. Dongguan Branch No. 96, Guantai Road (Houjie Section), Houjie Town, Dongguan City, Guangdong Province. 523942. People’s Republic of China. Tel: +86 769 8998 2098 Fax: +86 769 8593 1080 Email: [email protected] Page 2 of 53 Report Version 1 Test Report No.: RF2604WDG0144 TABLE OF CONTENTS RELEASE CONTROL RECORD ..................................................................................................... 5 1 SUMMARY OF TEST RESULTS ............................................................................................. 6 2 MEASUREMENT UNCERTAINTY .......................................................................................... 6 3 GENERAL INFORMATION ..................................................................................................... 7 3.1 GENERAL DESCRIPTION OF EUT ............................................................................... 7 3.2 DESCRIPTION OF TEST MODES ................................................................................. 8 3.2.1. CONFIGURATION OF SYSTEM UNDER TEST .................................................... 9 3.2.2. TEST MODE APPLICABILITY AND TESTED CHANNEL DETAIL ............................. 9 3.3 GENERAL DESCRIPTION OF APPLIED STANDARDS ............................................... 11 3.4 DESCRIPTION OF SUPPORT UNITS .......................................................................... 11 3.5 CONFIGURATION OF SYSTEM UNDER TEST ........................................................... 11 3.6 DUTY CYCLE OF TESET SIGNAL ............................................................................... 12 4 TEST TYPES AND RESULTS ............................................................................................... 13 4.1. RADIATED EMISSION AND BANDEDGE MEASUREMENT ....................................... 13 4.1.1 LIMITS OF RADIATED EMISSION AND BANDEDGE MEASUREMENT ................ 13 4.1.2 TEST INSTRUMENTS .............................................................................................. 14 4.1.3 TEST PROCEDURES .............................................................................................. 15 4.1.4 DEVIATION FROM TEST STANDARD .................................................................... 16 4.1.5 TEST SETUP ............................................................................................................ 16 4.1.6 EUT OPERATING CONDITIONS ............................................................................. 17 4.1.7 TEST RESULTS........................................................................................................ 18 4.2 NUMBER OF HOPPING FREQUENCY USED ............................................................ 26 4.2.1 LIMIT OF HOPPING FREQUENCY USED .............................................................. 26 4.2.2 TEST SETUP ............................................................................................................ 26 4.2.3 TEST INSTRUMENTS .............................................................................................. 26 4.2.4 TEST PROCEDURES .............................................................................................. 27 4.2.5 DEVIATION FROM TEST STANDARD .........................................…

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