2A5D2-KEAACTIVE NOISE CANCELLATION HEADPHONE

FCC Warning

Rev 1/26/2023 SHENZHEN CHANGYUN TECH CO., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: December 26, 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2A5D2-KEA [SHENZHEN CHANGYUN TECH 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. Sincerely, Peter Wang Rev 1/26/2023 SHENZHEN CHANGYUN TECH CO., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: December 26, 2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2A5D2-KEA [SHENZHEN CHANGYUN TECH 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 a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Peter Wang

SHENZHEN CHANGYUN TECH CO., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: December 26, 2024 SUBJECT: FCC SDoC declaration for FCC ID: 2A5D2-KEA To Whom It May Concern: I, the undersigned, hereby states t his equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules, and will apply the Supplier's Declaration of Conformity procedure to the class B computer peripheral portion of this composite device. I understand the following FCC requirements: 1. Devices subject to the SDoC procedure are required to be tested to show compliance with the FCC technical regulations by a recognized accredited testing laboratory. The testing laboratory must be accredited by a Commission approved accreditation body or designated under the terms of a government-to-government Mutual Recognition Agreement (MRA). A listing of those accredited testing laboratories that have been recognized by the Commission is published on the FCC Webpage: https://apps.fcc.gov/oetcf/eas/reports/TestFirmSearch.cfm (Select the "accredited" option to search for FCC recognized accredited test firms.) 2. Pt 2.1077 contains the list of information that must be included in the Supplier's Declaration of Conformity, which must be supplied with each product sold. The SDoC compliance info shall be included in the User’s Manual or as a separate sheet. The info must contain the name, address, and phone number of the responsible party, which must be located within the United States. According to 2.909(b), the responsible party is either the Manufacturer or if the product is imported the Importer. Regards, SHENZHEN CHANGYUN TECH CO., LTD ------------------------------- Peter Wang

SHENZHEN CHANGYUN TECH CO., LTD U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: December 26, 2024 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2A5D2-KEA SHENZHEN CHANGYUN TECH CO., LTD (“the applicant”) certifies that, as of the date of the filing of the application, CLF Import and Export Limited (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. CLF Import and Export Limited ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name: CLF Import and Export Limited FRN: 0033489683 Address: 1312 17th Street #692, Denver, CO 80202, United States Signature: Contact Person: David Chen Tel: +1 949 254 2565 Email: [email protected] Applicant Company Name: SHENZHEN CHANGYUN TECH CO., LTD FRN: 0032046369 Address: 605, Kai Daer Building 2, No.168 Tongsha Road Xinwei Community, Xili Street Nanshan District, Shenzhen Guangdong 518000 China Signature: Contact Person: Peter Wang Tel: 13538218145 Email: [email protected]

Rev 11/20/07 SHENZHEN CHANGYUN TECH CO., LTD Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2A5D2-KEA. Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name (Block Diagram, Schematics, Operational Description) (Block Diagram.pdf, Schematics.pdf, Operational Description.pdf) The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name (Internal Photos, Test Setup Photos, User Manual) (Internal Photos.pdf, Test Setup Photos.pdf, User Manual.pdf) For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Peter Wang

SHENZHEN CHANGYUN TECH CO., LTD Model Difference Statement Dear Sir/Madam, Added models Kiwi Ears Spark, Kiwi Ears Attiva, Kiwi Ears Avento, Kiwi Ears Ardor, Kiwi Ears Ember, Kiwi Ears Blaze, Kiwi Ears Storm, Kiwi Ears Atlas, Kiwi Ears Anthem basis of the original product Kiwi Ears Aventus Note 2: The appearance color, product appearance and model name of the listed series models are different from the main models. However, the circuit and electronic structure are the same and are declared by the manufacturer. Sincerely, Name: Peter Wang Company name: SHENZHEN CHANGYUN TECH CO., LTD Address: 605, Kai Daer Building 2, No.168 Tongsha Road Xinwei Community, Xili Street Nanshan District, Shenzhen Guangdong 518000 China

SHENZHEN CHANGYUN TECH CO., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: December 26, 2024 SUBJECT: FCC Application for FCC ID: 2A5D2-KEA To Whom It May Concern: We, the undersigned, hereby authorize Lieber Ouyang at Shenzhen CCUT Quality Technology Co., Ltd. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Lieber Ouyang at Shenzhen CCUT Quality Technology Co., Ltd. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Peter Wang

Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report Annex A. EUT External Photos EUT View 1 EUT View 2 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT View 3 EUT View 4 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT View 5 EUT View 6 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT View 7 EUT View 8

Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report Annex D. Label and Information FCC Label Sample FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location Label Location

Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report Annex B. EUT Internal Photos EUT Internal View 1 EUT Internal View 2 PCB ANT Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT Internal View 3 EUT Internal View 4 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT Internal View 5 EUT Internal View 6 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT Internal View 7 EUT Internal View 8 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT Internal View 9 EUT Internal View 10 Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report EUT Internal View 10

FCC ID: 2A5D2-KEA RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093，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. 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 Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. For BR+EDR Max Conducted Power(dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit -6.14 -6(±1) -5 0.32 2402 5 0.09919 3.0 So a SAR test is not required

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26-0.76-0.58-5.25-2.46-1.86 MAX. Gain -0.58dB PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Address 3 33 Kexing Road, Xiangzhou District, Zhuhai City Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-1.26174-30.0801-7.18716 2450-0.765802-36.5604-7.48023 2500-0.585582-22.0315-6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

CCUT Testing & Certification Report No: SSP24100230-1E FCC Test Report Page 1 of 51 FCC T EST REPORT FCC ID: 2A5D2-KEA Report No. : SSP24100230-1E Applicant : SHENZHEN CHANGYUN TECH CO., LTD Product Name : ACTIVE NOISE CANCELLATION HEADPHONE Model Name : Kiwi Ears Aventus Test Standard : FCC Part 15.247 Date of Issue : 2024-12-23 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. CCUT Testing & Certification Report No: SSP24100230-1E FCC Test Report Page 2 of 51 Test Report Basic Information Applicant..................................: SHENZHEN CHANGYUN TECH CO., LTD Address of Applicant...............: 605, Kai Daer Building 2, No.168 Tongsha Road Xinwei Community, Xili Street Nanshan District, Shenzhen Guangdong 518000 China Manufacturer..........................: SHENZHEN CHANGYUN TECH CO., LTD Address of Manufacturer........: 605, Kai Daer Building 2, No.168 Tongsha Road Xinwei Community, Xili Street Nanshan District, Shenzhen Guangdong 518000 China Product Name.........................: ACTIVE NOISE CANCELLATION HEADPHONE Brand Name.............................: Kiwi Ears Main Model..............................: Kiwi Ears Aventus Series Models..........................: Kiwi Ears Spark, Kiwi Ears Attiva, Kiwi Ears Avento, Kiwi Ears Ardor, Kiwi Ears Ember, Kiwi Ears Blaze, Kiwi Ears Storm, Kiwi Ears Atlas, Kiwi Ears Anthem Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2013 Date of Test .............................: 2024-10-25 to 2024-12-23 Test Result...............................: PASS Tested By ................................: (Leonis Cai) Reviewed By............................: (Lieber Ouyang) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. CCUT Testing & Certification Report No: SSP24100230-1E FCC Test Report Page 3 of 51 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................6 1.3 Compliance Standards ...........................................................................................................................................7 1.4 Test Facilities ........................................................................................................................................................7 1.5 List of Measurement Instruments ..........................................................................................................................8 1.6 Measurement Uncertainty .....................................................................................................................................9 2. Summary of Test Results ........................................................................................................................................... 10 3. Antenna Requirement ............................................................................................................................................... 11 3.1 Standard and Limit.............................................................................................................................................. 11 3.2 Test Result .......................................................................................................................................................... 11 4. Conducted Emissions ................................................................................................................................................ 12 4.1 Standard and Limit.............................................................................................................................................. 12 4.2 Test Procedure.................................................................................................................................................... 12 4.3 Test Data and Results .......................................................................................................................................... 13 5. Radiated Emissions ................................................................................................................................................... 16 5.1 Standard and Limit.............................................................................................................................................. 16 5.2 Test Procedure.................................................................................................................................................... 16 5.3 Test Data and Results .......................................................................................................................................... 18 6. Band-edge Emissions(Radiated) ............................................................................................................................... 22 6.1 Standard and Limit.............................................................................................................................................. 22 6.2 Test Procedure...........…

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Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report Annex C. Test Photos Conducted Emission Test View 1 Radiated Emission Test View Below 1GHz Report No: SSP24100230-1E FCC ID: 2A5D2-KEA Annex of Test Report Radiated Emission Test View Above 1GHz