2AVIT-CW200Open-Ear Wireless Earbuds

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: EARFUN, INC FRN: 0033640855 Contact Name: ZILI WANG Address: 8605 SANTA MONICA BLVD #79525 WEST HOLLYWOOD, CA 90069-4109 Telephone No: (757) 655-5536 Email: [email protected] Applicant: Company name: Earfun Technology (HK) Limited FRN: 0029085636 Product Description: Open-Ear Wireless Earbuds Grantee code: 2AVIT FCC ID: 2AVIT-CW200 Contact Name: Rocky Deng Address: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG Telephone No: +8615989596589 Email: [email protected] [Earfun Technology (HK) Limited] certifies that, as of the date of this filing of the application with the TCB, [EARFUN, INC] is our designated US agent for service of process for the above referenced FCC ID. [Earfun Technology (HK) Limited] 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. [EARFUN, 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: 01.22.2026 Applicant’s Name: Rocky Deng US Agent’s Name: ZILI WANG Title: Manager Title: 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: Earfun Technology (HK) Limited Grantee code: 2AVIT FCC ID: 2AVIT-CW200 FRN: 0029085636 Contact Name: Rocky Deng Address: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG Telephone No: +8615989596589 Fax No: +8618018710764 Email: [email protected] i. [Earfun Technology (HK) Limited] (“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. [Earfun Technology (HK) Limited] (“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. Earfun Technology (HK) Limited 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: 01.22.2026 Applicant’s Name: Rocky Deng Title: 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

Earfun Technology (HK) Limited 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 Open-Ear Wireless Earbuds Company name Earfun Technology (HK) Limited Grantee code 2AVIT FCC ID 2AVIT-CW200 FRN 0029085636 Contact name Rocky Deng Address FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG Telephone number +8615989596589 E-mail [email protected] Chipset/module information BT8972F 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: Rocky Deng Date: 1/22/2026 1 The justification field is used to justify why the software cannot be received through that interface. Check the annex for more indications.

TCB CALL página 1 File FCC ID: 2AVIT-CW200 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 CALIFORNIA: https://bizfileonline.sos.ca.gov/search/business TCB CALL página 2 In google: However after deeply investigate I could see: TCB CALL página 3 TCB CALL página 4 ► 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 " >

Earfun Technology (HK) Limited version02 1/22/2026 Dear Sirs: We hereby declare that because the earphone size is too small, the FCC ID number is printed on the User Manual and product packaging, hereby declare. FCC ID: 2AVIT-CW200 Sincerely, Signature: Name: Rocky Deng Title: Manager Company: Earfun Technology (HK) Limited

C5266091_X10_Ed.2 1/1 Earfun Technology (HK) Limited Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 1/22/2026 Subject: Request for Confidentiality FCC ID: 2AVIT-CW200 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: Rocky Deng Title: Manager

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Earfun Technology (HK) Limited Address: FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG Product Name: Open-Ear Wireless Earbuds Model Number: CW200 FCC Identifier: 2AVIT-CW200 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: Rocky Deng Date: 1/22/2026 Title: Manager Signature of applicant:

Page1of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] PhotographsoftheEUT Model:CW200 External Page2of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page3of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page4of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected]

Page5of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Internal Page6of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] Page7of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected] ANT Page8of8ReportNo.:MTi251023015-0109 Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China. Tel:0755-88850135-1439Mobile:131-4343-1439(Wechatsamenumber)Web:http://www.mtitest.cnE-mail:[email protected]

Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page 1 of 7 RFEXPOSURE TestReport ReportNo.:MTi251023015-0109E3 DateofIssue:2025-12-24 Applicant:EarfunTechnology(HK)Limited Product:Open-EarWirelessEarbuds Model(s):CW200 FCCID:2AVIT-CW200 ShenzhenMicrotestCo.,Ltd. TESTREPORT ReportNo.:MTi251023015-0109E3 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page2of7 Tableofcontents 1StandaloneSARtestexclusionconsiderations.................................................................4 2SARTestExclucsionThresholds.........................................................................................5 TESTREPORT ReportNo.:MTi251023015-0109E3 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page3of7 TestResultCertification ApplicantEarfunTechnology(HK)Limited ApplicantAddress FLAT/RMA9F,SILVERCORPINTERNATIONALTOWER707-713NATHAN ROADMONGKOKKL,HONGKONG ManufacturerEarfunTechnology(HK)Limited Manufacturer Address FLAT/RMA9F,SILVERCORPINTERNATIONALTOWER707-713NATHAN ROADMONGKOKKL,HONGKONG FactoryDongguanSiliSoundTechnologyCo.,LTD FactoryAddress Room601,No.26,XinyangRoad,LinVillage,TangxiaTown,Dongguancity, GuangdongProvince Productdescription ProductnameOpen-EarWirelessEarbuds TrademarkEarFun ModelnameCW200 SeriesModel(s)N/A Standards47CFRPart2.1093 TestmethodKDB447498D01v06 TestingInformation Dateoftest2025-12-17to2025-12-19 TestResultPass Preparedby:MaleahDeng Reviewedby:DavidLee Approvedby:LewisLian TESTREPORT ReportNo.:MTi251023015-0109E3 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page4of7 1StandaloneSARtestexclusionconsiderations UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-g headorbodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,by measurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTest ExclusionThresholdcondition(s),listedbelow,is(are)satisfied. Thesetestexclusionconditionsarebasedonsource-basedtime-averagedmaximum conductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-uptolerance, andtheminimumtestseparationdistancerequiredfortheexposureconditions. Theminimumtestseparationdistancedefinedin4.1f)isdeterminedbythesmallestdistance fromtheantennaandradiatingstructuresoroutersurfaceofthedevice,accordingtothehost formfactor,exposureconditionsandplatformrequirements,toanypartofthebodyorextremity ofauserorbystander. ToqualifyforSARtestexclusion,thetestseparationdistancesappliedmustbefullyexplained andjustified,typicallyintheSARmeasurementorSARanalysisreport,bytheoperating configurationsandexposureconditionsofthetransmitterandapplicablehostplatform requirements,accordingtotherequiredpublishedRFexposureKDBprocedures. WhennootherRFexposuretestingorreportingarerequired,astatementofjustificationand compliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,toqualifyfor SARtestexclusion. Whenrequired,thedevicespecificconditionsdescribedintheotherpublishedRFexposure KDBproceduresmustbesatisfiedbeforeapplyingtheseSARtestexclusionprovisions. a)For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz  PoweranddistanceareroundedtothenearestmWandmmbeforecalculation  Theresultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. b)For100MHzto6GHzandtestseparationdistances>50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing(alsoillustratedinAppendixB): 1){[Powerallowedatnumericthresholdfor50mminstepa)]+[(testseparation distance–50mm)·(f(MHz)/150)]}mW,for100MHzto1500MHz 2){[Powerallowedatnumericthresholdfor50mminstepa)]+[(testseparation distance–50mm)·10]}mW,for>1500MHzand≤6GHz c)Forfrequenciesbelow100MHz,thefollowingmaybeconsideredforSARtestexclusion (alsoillustratedinAppendixC): 1)Fortestseparationdistances>50mmand<200mm,thepowerthresholdatthe correspondingtestseparationdistanceat100MHzinstepb)ismultipliedby[1+ TESTREPORT ReportNo.:MTi251023015-0109E3 Tel:0755-88850135-1439 Mobile:131-4343-1439（Wechatsamenumber） Web:http://www.mtitest.cnE-mail:[email protected] Address:101,No.7,Zone2,XinxingIndustrialPark,FuhaiAvenue,XinheCommunity,FuhaiStreet,Bao’anDistrict,Shenzhen,Guangdong,China Q/MTI-QP-12-FE012 Ver./Rev.：A1 Page5of7 log(100/f(MHz))] 2)Fortestseparationdistances≤50mm,thepowerthresholddeterminedbythe equationinc)1)for50mmand100MHzismultipliedby½ 3)SARmeasurementproceduresarenotestablishedbelow100MHz. WhenSARtestexclusioncannotbeapplied,aKDBinquiryisrequiredtodetermineSAR evaluationrequirementsforanySARtestresultsbelow100MHztobeacceptable. 2SARTestExclucsionThresholds Weuse5mmasseparationdistancetocalculated. Ant1(Left): BluetoothDSS: Transmit Frequency (GHz) Mode Measured Power (dBm) Tune-up power (dBm) Maxtune-upResu…

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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 88 Test Report Report No. : MTi251023015-0109E2 Date of issue : 2025-12-24 Applicant : Earfun Technology (HK) Limited Product : Open-Ear Wireless Earbuds Model(s) : CW200 FCC ID : 2AVIT-CW200 Shenzhen Microtest Co., Ltd. TEST REPORT Report No.: MTi251023015-0109E2 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 88 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 6dB Bandwidth................................................................................................................. 12 6.2 Maximum Conducted Output Power ................................................................................ 14 6.3 Power Spectral Density ................................................................................................... 15 6.4 RF conducted spurious emissions and band edge measurement ................................... 16 6.5 Band edge emissions (Radiated) ..................................................................................... 17 6.6 Radiated emissions (below 1GHz) ................................................................................... 22 6.7 Radiated emissions (above 1GHz) .................................................................................. 28 Photographs of the test setup ........................................................................................................ 35 Photographs of the EUT.................................................................................................................. 36 Appendix A: DTS Bandwidth .......................................................................................................... 38 Appendix B: Maximum conducted output power ......................................................................... 45 Appendix C: Maximum power spectral density ............................................................................ 52 Appendix D: Band edge measurements ........................................................................................ 59 Appendix E: Conducted Spurious Emission ................................................................................. 63 Appendix F: Duty Cycle .................................................................................................................. 81 TEST REPORT Report No.: MTi251023015-0109E2 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 88 Test Result Certification Applicant Earfun Technology (HK) Limited Applicant Address FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG Manufacturer Earfun Technology (HK) Limited Manufacturer Address FLAT/RM A 9F, SILVERCORP INTERNATIONAL TOWER 707-713 NATHAN ROAD MONGKOK KL, HONG KONG Factory Dongguan SiliSound Technology Co., LTD Factory Address Room 601, No. 26, Xinyang Road, Lin Village, Tangxia Town, Dongguan city, Guangdong Province Product description Product name Open-Ear Wireless Earbuds Trademark EarFun Model name CW200 Series Model(s) N/A 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 2025-12-17 to 2025-12-19 Test result Pass Prepared by: Maleah Deng Reviewed by: David Lee Approved by: Lewis Lian TEST REPORT Report No.: MTi251023015-0109E2 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,C…

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ShenzhenYaxin Communication Technology Co., Ltd. sample admission certificate YX-CW200-L-V2.0 Communication Acknowledgment Customer Name: Beijing Ansheng Technology Customer model CW200 Brand: YX-CW200-L-V2.0, manufactured by Yaxin Communication Xiaxin Communication Judgment Review Group work outexamine and verify ratifyAcknowledgment completion time Jiang YananWu ShoupingWu Shoulan2025.12.13 VoiceActor (Customer) Review Team Acknowledgement number time of submission of admission admitexamine and verify ratifyRecognition date Items for review:□3 copies of acceptance certificates□Specifications/Drawings□Inspection reports□Samples (PCS)□Safety regulations□HSF Review result:□Accept□Accept with conditions□Reject Address : No. 1202B, Comprehensive Building, Building C6, Hengfeng Industrial City, No. 739 Zhoushi Road, Hezhou Community, Hangcheng Street, Bao'an District, Shenzhen City ConfidentialInformation Page11 2 Itemdate order ofthe edition revisionnoteremarks 12025.12.13A0initialissue Confidential Information Page 11 3 1. Antenna picture Thereport mainly provides the test status oftheelectricalproperties parametersof YX-CW200-L-V2.0.The YX-CW200-L-V2.0 antenna is a BT Band . The antenna Picture and assembly are shown below. FPC Antenna picture & assembly picture 2.Antenna Test Equipment Introduction Test of antenna input characteristics using Agilent E5071C and Agilent 5062A vector network analyzer; The radiation pattern of the antenna are tested using the Satimo starlab 3D near field Anechoic Chamber , and the instrument is used to agilent8960 E5515 and Agilent E4438C. The test coordinates of the darkroom are as follows: ConfidentialInformation Page11 4 3.ElectricalSpecification 3-2PassiveS11parameter MeasuringMethodisa50Ωcoaxialcableisconnectedtotheantenna.Thenthiscableis connectedtoanetworkanalyzertomeasuretheS11parameter,Keepingthisfixtureawayfrommetal atleast20cm. VSWR 3-32D/3Dfieldpatterndiagram Confidential Information Page 11 5 3-4 Passive efficiency & Gain Freqency(MHz)Gain(dBi)Efficiency(%) 2400-1.734.14 2410-1.8733.28 2420-1.9832.47 2430-2.131.79 2440-2.1431.23 2450-2.2930.55 2460-2.1329.74 2470-1.7928.63 2480-1.4427.58 2490-1.2426.67 2500-1.2325.79 Unit: dBi Freqency: 2400 2440 2500 ConfidentialInformation Page11 6 3-5OTAactive FSBTTESTL FSBTTESTL FSBTTESTL FSBTTESTL FSBTTESTL FSBTTESTL FSBTTESTL FSBTTESTL CHTRPTIS 05.35-89.63 395.15-90.25 784.78-88.38 BHBTTESTL BHBTTESTL BHBTTESTL BHBTTESTL BHBTTESTL BHBTTESTL BHBTTESTL BHBTTESTL CHTRPTIS 02.85-86.75 393.05-87.14 783.66-85.45 Confidential Information Page 11 7 4. Mechanical Specification: Mechanical Configuration (Unit: mm) he appearance of the antenna is according to drawing Figure 10

ShenzhenYaxin Communication Technology Co., Ltd. sample admission certificate YX-CW200-R-V2.0 Acknowledgment Letter Customer Name: Beijing Ansheng Technology Customer model CW200 Brand: YX-CW200-R-V2.0, manufactured by Yaxin Communication Xiaxin Communication Judgment Review Group work outexamine and verify ratifyAcknowledgment completion time Jiang YananWu ShoupingWu Shoulan2025.12.13 Voice Actor (Customer) Review Team Acknowledgement number time of submission of admission admitexamine and verify ratifyRecognition date Items for review:□3 copies of acceptance certificates□Specifications/Drawings□Inspection reports□Samples (PCS)□Safety regulations□HSF Review result:□Accept□Accept with conditions□R…

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