2BFL4-BT-18Helmet earphone

ShenzhenJiayoudaElectronicsCo.,Ltd Address：711,BuildingC,LangkouBaokeIndustrialZone,LonghuaDistrict, Date:2024-08-10 FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsPart2.911(d)(7)Filing SUBJECT:FCCApplicationforFCCID:2BFL4-BT-18 FRN:0035190701 (“ShenzhenJiayoudaElectronicsCo.,Ltd”)certifiesthat,asofthedateofthefilingofthe application,GSSSERVICEINCisourdesignatedU.S.agentforserviceofprocessforthe abovereferencedFCCID.(“ShenzhenJiayoudaElectronicsCo.,Ltd”)acceptstomaintainan agentfornolessthanoneyearafterthegranteehasterminatedallmarketingandimportation ortheconclusionofanyCommission-relatedproceedinginvolvingtheequipment. GSSSERVICEINCaccepts,asofthedateofthefilingoftheapplication,theobligationofthe designatedU.S.agentforserviceofprocessfortheabovereferencedFCCID. DesignatedU.S.AgentInformation: Name:GSSSERVICEINC Address:6547NAcademyBlvd#2266ColoradoSpringsCOLORADO80918UnitedStates FRN：0033402082 ContactPerson:MichouxLogan Tel.:001-949-2990192 Email:[email protected] Sincerely, Signedonbehalfof（ShenzhenJiayouda ElectronicsCo.,Ltd） SignedonbehalfofGSSSERVICEINC Name:JinpingHeName:MichouxLogan Title:ManagerTitle:Manager Date:2024-08-10Date:2024-08-10

(ShenzhenJiayoudaElectronicsCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024-08-10 FCCID:2BFL4-BT-18 Ref.#1:AttestationStatementsPart2.911(d)(5)(i)Filing (“ShenzhenJiayoudaElectronicsCo.,Ltd”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Ref.#2:AttestationStatementsPart2.911(d)(5)(ii)Filing (“ShenzhenJiayoudaElectronicsCo.,Ltd”)certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Applicant:ShenzhenJiayoudaElectronicsCo.,Ltd Address:711,BuildingC,LangkouBaokeIndustrialZone,LonghuaDistrict, ContactPerson:JinpingHe Tel.:+8615297841020 Email:[email protected] Sincerely, Signature:

Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Horizontal Vertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dB Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Address 333 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) Max Min Avg 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.

ShenzhenJiayoudaElectronicsCo.,Ltd Date：2024-08-10 ProductModelNumber:BT-18 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatORGANIZATION.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyORGANIZATION.onourbehalf shallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:+8615297841020 Onbehalfof:ShenzhenJiayoudaElectronicsCo.,Ltd

ShenzhenJiayoudaElectronicsCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August10,2024 Subject;RequestforConfidentiality FCCID:2BFL4-BT-18 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:JinpingHe Title:Manager

FCCID:2BFL4-BT-18 EUTPHOTOS(ExternalPhotos) FCCID:2BFL4-BT-18 FCCID:2BFL4-BT-18 FCCID:2BFL4-BT-18 ※※※※※ENDOFREPORT※※※※※

Size:2mmX9mm FCCID:2BFL4-BT-18

FCCID:2BFL4-BT-18 EUTPHOTO(InternalPhotos) FCCID:2BFL4-BT-18 FCCID:2BFL4-BT-18 BT-ANT FCCID:2BFL4-BT-18 ※※※※※ENDOFREPORT※※※※※

FCCID:2BFL4-BT-18 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093， UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. 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 Here, Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit BT7.277±16.31240251.9563.0 SoaSARtestisnotrequired

Project No.: ZHT-240708030E Page 1 of 96 FCC TEST REPORT FCC ID: 2BFL4-BT-18 Report Number. ................................ : ZHT-240703018E Date of Test ...................................... : July 03, 2024 to July 16, 2024 Date of issue .................................... : July 16, 2024 Test Result ..................................... : PASS Testing Laboratory. ........................... : Guangdong Zhonghan Testing Technology Co., Ltd. Address .......................................... : Room 104, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Applicant's name ............................ : Shenzhen Jiayouda Electronics Co.,Ltd Address .......................................... : 711, Building C,Langkou Baoke Industrial Zone, Longhua District, Manufacturer's name ..................... : Shenzhen Jiayouda Electronics Co.,Ltd Address .......................................... : 711, Building C,Langkou Baoke Industrial Zone, Longhua District, Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Test procedure ................................. : ANSI C63.10:2013 Non-standard test method ............. : N/A This device described above has been tested by ZHT, and 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. This report shall not be reproduced except in full, without the written approval of ZHT, this document may be altered or revised by ZHT, personal only, and shall be noted in the revision of the document. Product name ................................. : Helmet earphone Trademark ...................................... : / Model/Type reference ...................... : BT-18 Model difference .............................. : / Ratings ............................................. : Input: DC 5 V or DC 3.7V by battery Project No.: ZHT-240708030E Page 2 of 96 Testing procedure and testing location: Testing Laboratory ..................................... : Guangdong Zhonghan Testing Technology Co., Ltd. Address ...................................................... : Room 104, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Leon Li Tested by (name + signature) .................... : Baret Wu Reviewer (name + signature) ..................... : Levi Lee Approved (name + signature) .................... : Project No.: ZHT-240708030E Page 3 of 96 Table of Contents Page 1. VERSION ........................................................................................................................................... 5 2. TEST SUMMARY .............................................................................................................................. 6 2.1 TEST FACILITY ............................................................................................................................... 7 2.2 MEASUREMENT UNCERTAINTY ................................................................................................... 7 3. GENERAL INFORMATION ............................................................................................................... 8 3.1 GENERAL DESCRIPTION OF EUT ................................................................................................ 8 3.2 Test Setup Configuration ............................................................................................................... 10 3.3 Support Equipment ........................................................................................................................ 10 3.4 Test Mode ...................................................................................................................................... 10 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS ................................................................................ 11 4. EMC EMISSION TEST .................................................................................................................... 13 4.1 Conducted emissions .................................................................................................................... 13 4.1.1 POWER LINE CONDUCTED EMISSION Limits ........................................................................ 13 4.1.2 TEST PROCEDURE ................................................................................................................... 13 4.1.3 DEVIATION FROM TEST STANDARD ...................................................................................... 13 4.1.4 TEST SETUP .............................................................................................................................. 14 4.1.5 EUT OPERATING CONDITIONS ............................................................................................... 14 4.1.6 Test result ................................................................................................................................... 14 4.2 Radiated emissions........................................................................................................................ 17 4.2.1 Radiated Emission Limits ........................................................................................................... 17 4.2.2 TEST PROCEDURE ................................................................................................................... 17 4.2.3 DEVIATION FROM TEST STANDARD ...................................................................................... 18 4.2.4 TEST SETUP .............................................................................................................................. 18 4.2.5 EUT OPERATING CONDITIONS ............................................................................................... 19 4.2.6 TEST RESULTS ...…

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FCCID:2BFL4-BT-18 EUTTESTPHOTOS FCCID:2BFL4-BT-18 ※※※※※ENDOFREPORT※※※※※