2A9MI-Y10Helmet Bluetooth headset

ShenzhenYixiTechnologyCo.,LTD 04-20-2023 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor(FCCID:2A9MI-Y10) [ShenzhenYixiTechnologyCo.,LTD](“theapplicant”)certifiesthattheequipment forwhichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceiving anequipmentauthorizationpursuanttosection2.903oftheFCCrules. Sincerely, QisongWang ShenzhenYixiTechnologyCo.,LTD 04-20-2023 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor(FCCID:2A9MI-Y10) ShenzhenYixiTechnologyCo.,LTD](“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListasan entityproducing“covered”equipment. Sincerely, QisongWang

ShenzhenYixiTechnologyCo.,LTD AgentAuthorizationLetter 2023-04-20 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 USA RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenMostTechnologyServiceCo.,Ltd.toact onourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthe signingofalldocumentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothe denialofbenefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuse Actof1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Name:QisongWang Position:Manager CompanyName: ShenzhenYixiTechnologyCo.,LTD Address:SecondFloor,BuildingB,AreaALongquanSciencePark,Dalang HuaxingRoadLonghuaDistrict,ShenzhenCity Tel/Fax+86-13423817655 E-Mail:[email protected]

ShenzhenYixiTechnologyCo.,LTD LongTermConfidentialityRequestLetter 2023-04-20 EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 USA RE:CONFIDENTIALITYREQUESTFOR(FCCID:2A9MI-Y10) ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459of CFR47.Wehaverequestedthatthe -e.g.Blockdiagram -e.g.SCH -e.g.OperationalDescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublicreview. Theabovedocumentsarecompanyproprietaryinformationthatcouldnevergetinto thepossessionofyourcompetition. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Name:QisongWang Position:Manager CompanyName: ShenzhenYixiTechnologyCo.,LTD Address:SecondFloor,BuildingB,AreaALongquanSciencePark,Dalang HuaxingRoadLonghuaDistrict,ShenzhenCity Tel/Fax+86-13423817655 E-Mail:[email protected]

ModelNo.:Y10 FRONTVIEWOFSAMPLE BACKVIEWOFSAMPLE ModelNo.:Y10 LEFTVIEWOFSAMPLE RIGHTVIEWOFSAMPLE ModelNo.:Y10 TOPVIEWOFSAMPLE BOTTOMVIEWOFSAMPLE ModelNo.:Y10

FCCID:2A9MI-Y10

ModelNo.:Y10 Page1of2 INTERNALPHOTOOFSAMPLE INTERNALPHOTOOFSAMPLEPCB BTAntenna ModelNo.:Y10 Page2of2 INTERNALPHOTOOFSAMPLEPCB

ShenzhenMostTechnologyServiceCo.,Ltd. No.5,2ndLangshanRoad,NorthDistrict,Hi-techIndustrialPark,Nanshan, Shenzhen,Guangdong,China. RFExposureEvaluationReport ReportReferenceNo........................: FCCID.................................................: MTEB23040071-R 2A9MI-Y10 Compiledby (position+printedname+signature) .. :FileadministratorsAlisaLuo Supervisedby (position+printedname+signature) .. :TestEngineerSunnyDeng Approvedby (position+printedname+signature)..: ManagerYvetteZhou Dateofissue.........................................:April11,2023 RepresentativeLaboratoryName.:ShenzhenMostTechnologyServiceCo.,Ltd. Address.................................................: No.5,2ndLangshanRoad,NorthDistrict,Hi-techIndustrialPark, Nanshan,Shenzhen,Guangdong,China. Applicant’sname ............................... : ShenzhenYixiTechnologyCo.,LTD Address.................................................: SecondFloor,BuildingB,AreaA,LongquanSciencePark,Dalang HuaxingRoad,LonghuaDistrict,ShenzhenCity Testspecification/Standard............: 47CFRPart1.1307 47CFRPart2.1093 TRFOriginator ...................................... :ShenzhenMostTechnologyServiceCo.,Ltd. ShenzhenMostTechnologyServiceCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenMostTechnologyServiceCo.,Ltd.isacknowledgedascopyrightownerandsourceofthe material.ShenzhenMostTechnologyServiceCo.,Ltd.takesnoresponsibilityforandwillnotassume liabilityfordamagesresultingfromthereader'sinterpretationofthereproducedmaterialduetoits placementandcontext. Testitemdescription ........................ : HelmetBluetoothheadset TradeMark............................................: N/A Model/Typereference.........................:Y10 ListedModels......................................:N/A ModulationType..................................: GFSK,π/4DQPSK,8DPSK OperationFrequency .......................... : From2402MHzto2480MHz HardwareVersion................................. Y10-MV1.5 SoftwareVersion ................................... V1.5 Rating ..................................................... : DC3.7V(bybattery) DC5V(byUSB) Result.....................................................: PASS ReportNo.:MTEB23040071-RPage 2 of 5 TESTREPORT EquipmentunderTest: HelmetBluetoothheadset Model/Type:Y10 Applicant:ShenzhenYixiTechnologyCo.,LTD Address:SecondFloor,BuildingB,AreaA,LongquanSciencePark,Dalang HuaxingRoad,LonghuaDistrict,ShenzhenCity Manufacturer:ShenzhenYixiTechnologyCo.,LTD Address:SecondFloor,BuildingB,AreaA,LongquanSciencePark,Dalang HuaxingRoad,LonghuaDistrict,ShenzhenCity TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. ReportNo.:MTEB23040071-RPage 3 of 5 1.RevisionHistory RevisionIssueDateRevisionsRevisedBy 002023.04.11InitialIssueAlisaLuo ReportNo.:MTEB23040071-RPage 4 of 5 2.SAREvaluation 2.1RFExposureComplianceRequirement 2.1.1StandardRequirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06 4.3.1.StandaloneSARtestexclusionconsiderations UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheadorbodyand 10-gextremitySARevaluationforgeneralpopulationexposureconditions,bymeasurementornumerical simulation,isnotrequiredwhenthecorrespondingSARExclusionThresholdcondition,listedbelow,is satisfied. 2.1.2Limits The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparationdistances≤50mm aredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]·[√f(GHz)] ≤3.0for1-gSARand≤7.5for10-gextremitySAR,where Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmand fortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparation distanceis<5mm,adistanceof5mmisappliedtodetermineSARtestexclusion ReportNo.:MTEB23040071-RPage 5 of 5 2.1.3EUTRFExposure MeasurementData BTclassic GFSK Testchannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm) Lowest(2402MHz)-1.666-1.666±1-0.666 Middle(2440MHz) -1.031 -1.031±1 -0.031 Highest(2480MHz)-0.985-0.985±10.015 π/4DQPSK Testchannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm) Lowest(2402MHz) -1.728 -1.728±1 -0.728 Middle(2440MHz)-1.004-1.004±1-0.004 Highest(2480MHz)-1.016-1.016±1-0.016 8DPSK Testchannel PeakOutputPower (dBm) Tuneuptolerance (dBm) Maximumtune-upPower (dBm) Lowest(2402MHz)-1.704-1.704±1-0.704 Middle(2440MHz)-1.011-1.011±1-0.011 Highest(2480MHz) -1.010 -1.010±1 -0.010 Worstcase:GFSK Channel MaximumPeak ConductedOutput Power (dBm) Maximumtune-up Power Calculated value Exclusion threshold SARTest Exclusion (dBm)(mW) Lowest(2402MHz) -0.9850.0151.000.313.0Yes .......................THEENDOFREPORT.........................

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.73 -0.84 -0.68 -6.15 -3.70 -2.32 MAX. Gain -0.68 PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) 333 Kexing Road, Xiangzhou District, Zhuhai City Address Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain (dB) Frequency (MHz) MaxMinAvg 2400-1.73178-30.0815-8.48713 2450-0.845801-38.5605-7.88012 2500-0.685586-24.0318-6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -6.1530 -24.1420 -13.0295 2450 -3.7054 -26.5836 -10.6700 2500 -2.32122 -30.4301 -9.70536 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

ModelNo.:Y10 CETESTSETUP RETESTSETUP ModelNo.:Y10 RETESTSETUP