2BUSB-F1Helmet Bluetooth Headset

Rev1/26/2023 (NingboMoHaoIntelligentTechnologyCo.,Ltd.) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2/24/2026 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BUSB-F1 [NingboMoHaoIntelligentTechnologyCo.,Ltd.]certifiesthattheequipmentforwhichauthorizationis soughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. [NingboMoHaoIntelligentTechnologyCo.,Ltd.]certifiesthattheequipmentforwhichauthorizationis soughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc. oranyofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyof itssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB 986446D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, ZhongliQiu/Manager Rev1/26/2023 (NingboMoHaoIntelligentTechnologyCo.,Ltd.) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2/24/2026 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BUSB-F1 [NingboMoHaoIntelligentTechnologyCo.,Ltd.]certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofits subsidiariesoraffiliates)asanentityproducing“covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)ZhongliQiu/Manager

NingboMoHaoIntelligentTechnologyCo.,Ltd. ‘Date：2026-2-24 ProductModelNumber:F1 FCCID:2BUSB-F1 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:ZhongliQiu/Manager Email:[email protected] Telephone:86-19129436944 Onbehalfof:NingboMoHaoIntelligentTechnologyCo.,Ltd.

NingboMoHaoIntelligentTechnologyCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:February24,2026 Subject;RequestforConfidentiality FCCID:2BUSB-F1 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:ZhongliQiu Title:Manager

SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 1 OF 12 3.2X1.6X0.5 (mm) WiFi/Bluetooth Ceramic Chip Antenna Engineering Specification 1. Product Number (1)Product Type Chip Antenna (2)Size Code 3.2x1.6x0.5mm (3)Type Code H1 (4)Packing Plastic Packaging (5)Frequency 2.45GHz YF 3216 H1 X 2G45 1 2 3 4 5 Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 2 OF 12 2. Features *Stable and reliable in performances *Low temperature coefficient of frequency *Low profile, compact size *RoHS compliance *SMT processes compatible 3. Applications *Bluetooth earphone systems *Hand-held devices when WiFi /Bluetooth functions are needed, e.g., Smart phone. *IEEE802.11 b/g/n *ZigBee *Wireless PCMCIA cards or USB dongle 4. Description Yingfeng chip antenna series are specially designed for WiFi/Bluetooth applications. Based on yingfeng proprietary design and processes, this chip antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5. Electrical Specifications (80 x 40 mm 2 ground plane) 5-1. Electrical Table Characteristics Specifications Unit Outline Dimensions 3.2x1.6x0.5 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 2.5 (typical) dBi Efficiency 78 (typical) % SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 3 OF 12 5-2. Return Loss & VSWR Return Loss (S 11 ) VSWR(S 11 ) 6. Antenna Dimensions & Test Board (unit: mm) a. Antenna Dimensions b. Test Board with Antenna SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 4 OF 12 80 40 Unit: mm 7. Radiation Pattern (80 x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2442 MHz Z X Y SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen YZ-Plane Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 5 OF 12 7-2. 3D Efficiency Table Frequency( MHz) 2400 2410 2420 2430 2442 2450 2460 2470 2480 2490 2500 Efficiency (dB) -1.4 -1.0 -0.9 -0.7 -0.7 -0.8 -0.9 -1.1 -1.2 -1.3 -1.4 Efficiency (%) 72.8 73.7 74.3 74.4 75.5 75.0 74.0 73.6 73.1 72.6 71.5 Gain (dBi) 2.1 2.2 2.3 2.4 2.5 2.5 2.4 1.8 1.7 1.6 1.4 Y X Z Y X X Y Z SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen XY-Plane XZ-Plane Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 6 OF 12 7-3. 3D Efficiency vs. Frequency 8. Layout Guide a. Solder Land Pattern: Land pattern for soldering (gray marking areas) is as shown below. Depending on Customer’s requirement, matching circuit as shown below is also recommended. Efficiency vs. Frequency 50 60 70 80 90 100 24002410242024302442245024602470248024902500 Frequency(MHz) Efficiency(%) SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 7 OF 12 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：3.2 x 1.6 x 0.5(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF3216H1) Engineering Specification D OCUMENT YF3216H1X2G45 REV. NO. B PAGE 8 OF 12 9. Frequency tuning a. Chip antenna tuning scenario： b. Matching circuit：(Center frequency is about 2442 MHz @ 80 x 40 mm 2 ground plane) System Matching Circuit Component Location Description Vendor Toleranc e 1 1.2 pF* Murata (0402) ±0.1 pF 2 10PF* Murata(0402) ±0.5 PF 3 N/A* - - Fine tuning element 4 1.5 pF* Murata (0402) ±0.1 pF *Typical reference values which may need to be changed when circuit boards or part vendors are different. Matching circuit Feed 4. Fine tuning elemet 1 2 3 SHEN ZHEN YINGFENG ANTENNA TECHNOLOYCO.,LTD Room 412, Building 7, Phase II, Nanshan Cloud Valley Innovation Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan D…

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AnnexA ExternalPhotos TestModelNo.:F1 Page 1 of4 AnnexA ExternalPhotos TestModelNo.:F1 Page 2 of4 AnnexA ExternalPhotos TestModelNo.:F1 Page 3 of4 AnnexA ExternalPhotos TestModelNo.:F1 Page 4 of4

Size:10*5mm FCCID:2BUSB-F1

AnnexB InternalPhotos TestModelNo.:F1 Page 1 of3 AnnexB InternalPhotos TestModelNo.:F1 Page 2 of3 Chipantenna AnnexB InternalPhotos TestModelNo.:F1 Page 3 of3

MAXTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02RF RFTESTREPORT ReportReferenceNo. ....................... :MAX26010185P01-R02RF FCCID.................................................:2BUSB-F1 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature)..: Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue ......................................... :February28,2026 TestingLaboratoryName................: MAXLABTestingCo.,Ltd. Address ................................................. : 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname...............................: NingboMoHaoIntelligentTechnologyCo.,Ltd. Address.................................................: Room1-2346,1/F,Building041,BlockB,No.188JinghuaRoad, High-techZone,NingboCity,ZhejiangProvince Testspecification..............................: Standard................................................:KDB447498D01GeneralRFExposureGuidancev06 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLABTesting Co.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader's interpretationofthereproducedmaterialduetoitsplacementandcontext. Testitemdescription ........................ : HelmetBluetoothHeadset TradeMark ............................................ : N/A Manufacturer.........................................: NingboMoHaoIntelligentTechnologyCo.,Ltd. Model/Typereference ......................... : F1 ListedModels......................................: N/A Modulation...........................................:GFSK,π/4DQPSK,8-DPSK Frequency..............................................From2402MHzto2480MHz Rating ..................................................... :DC3.7VFromBatteryorDC5VbyUSBport Result ..................................................... :PASS MAXTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02RF RFEXPOSUREEVALUATIONMETHOD AccordingtoKDB447498D01GeneralRFExposureGuidancev06,Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluation forgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,isnotrequiredwhen thecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtestexclusion thresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]·[√f (GHz) ] ≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiation asspecifiedin§1.1307(b) EUTSpecification Frequencyband(Operating)WLAN:2.412GHz~2.462GHz WLAN:5.150GHz~5.250GHz WLAN:5.725GHz~5.850GHz OthersBT:2402-2480MHz DevicecategoryPortable(<20cmseparation) Mobile(>20cmseparation) Others Exposureclassification 3.0for1-gSARand ≤ 7.5for10-gextremitySAR AntennadiversitySingleantenna Multipleantennas Txdiversity Rxdiversity Tx/Rxdiversity Max.outputpower-0.106dBm(0.00098W) Antennagain(Max)2.5dBi EvaluationappliedMPEEvaluation SAREvaluation MAXTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02RF RFEXPOSUREEVALUATIONMETHOD SARTestExclusionThresholdsfor100MHz–6GHzand≤50mm ApproximateSARTestExclusionPowerThresholdsatSelectedFrequenciesandTestSeparation DistancesareillustratedinthefollowingTable. The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis ≤ 50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtest exclusion. MAXTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02RF Maximummeasuredtransmitterpower. BR+EDR Operating Mode Freque ncy Measur ed Power max. power Antenna Gain min.test separation distance [√f(GHz)] ResultLimit (MHz)(dBm)(mW)(dBi)(mm) GFSK 2402-0.6200.872.551.5500.26873 2441-1.4730.712.551.5620.22253 2480-2.4620.572.551.5750.17873 π/4DQPSK 2402-1.6720.682.551.5500.21093 2441-2.4780.572.551.5620.17663 2480-0.8080.832.551.5750.26153 8-DPSK 2402-1.3080.742.551.5500.22943 2441-1.9100.642.551.5620.20133 2480-0.1060.982.551.5750.30743 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)] ThetestResultislessthan3.0for1-gSARand≤7.5for10-gextremitySAR. Conclusion:NoSARisrequired.

MAXLABTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02 Page 1 of42 FCCPART15SUBPARTCTESTREPORT FCCPART15.247 ReportReferenceNo. ....................... :MAX26010185P01-R02 FCCID. ................................................ :2BUSB-F1 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature) .. : Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue ......................................... :February28,2026 TestingLaboratoryName................:MAXLABTestingCo.,Ltd. Address.................................................: 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname ............................... : NingboMoHaoIntelligentTechnologyCo.,Ltd. Address.................................................: Room1-2346,1/F,Building041,BlockB,No.188JinghuaRoad, High-techZone,NingboCity,ZhejiangProvince Testspecification..............................: Standard................................................: FCCPart15.247 ANSIC63.10-2020 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLAB TestingCo.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthe reader'sinterpretationofthereproducedmaterialduetoitsplacementandcontext. Testitemdescription ........................ : HelmetBluetoothHeadset TradeMark ............................................ : N/A Manufacturer ......................................... : NingboMoHaoIntelligentTechnologyCo.,Ltd. Model/Typereference.........................: F1 ListedModels......................................: N/A Modulation...........................................:GFSK,π/4DQPSK,8-DPSK Frequency .............................................. From2402MHzto2480MHz Rating ..................................................... :DC3.7VFromBatteryorDC5VbyUSBport Result ..................................................... :PASS MAXLABTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02 Page 2 of42 TESTREPORT EquipmentunderTest:HelmetBluetoothHeadset Model/Type:F1 ListedModels:N/A ModelDeclaration:N/A Applicant : NingboMoHaoIntelligentTechnologyCo.,Ltd. Address: Room1-2346,1/F,Building041,BlockB,No.188JinghuaRoad, High-techZone,NingboCity,ZhejiangProvince Manufacturer : NingboMoHaoIntelligentTechnologyCo.,Ltd. Address: Room1-2346,1/F,Building041,BlockB,No.188JinghuaRoad, High-techZone,NingboCity,ZhejiangProvince TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. MAXLABTestingCo.,Ltd.ReportNo.:MAX26010185P01-R02 Page 3 of42 Contents 1TESTSTANDARDS..............................................................................................................................4 2SUMMARY.................................................................................................................................................5 2.1GeneralRemarks..........................................................................................................................................5 2.2ProductDescription.....................................................................................................................................5 2.3EquipmentUnderTest.................................................................................................................................5 2.4ShortdescriptionoftheEquipmentunderTest(EUT).............................................................................5 2.5EUToperationmode.....................................................................................................................................6 2.6BlockDiagramofTestSetup.......................................................................................................................6 2.7RelatedSubmittal(s)/Grant(s)...................................................................................................................6 2.8Modifications.................................................................................................................................................6 3TESTENVIRONMENT........................................................................................................................7 3.1Addressofthetestlaboratory....................................................................................................................7 3.2TestFacility...................................................................................................................................................7 3.3Environmentalconditions............................................................................................................................7 3.4Summaryofmeasurementresults..............................................................................................................8 3.5Statementofthemeasurementuncertainty..............................................................................................8 3.6EquipmentsUsedduringtheTest..............................................................................................................9 4TESTCONDITIONSANDRESULTS.......................................................................................11 4.1ACPowerConductedEmission................................................................................................................11 4.2RadiatedEmission......................................................................................................................................14 4.3MaximumPeakOutputPower...................................................................................................................20 4.420dBBandwidth.............................................................…

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Testsetup TestModelNo.:F1 Testsetup TestModelNo.:F1