2BFL4-BT12-2XWireless Earphone

Press it twice in quick succession to activate the phone’s Voice Assistant (Siri) function 15-20 Charging port Charging port Charging port Quickly press twice to switch between automatic answer and no automatic answer. FCC Caution: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This 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. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

CoveredEquipmentCertificationAttestationLetter 2026.4.24 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2BFL4-BT12-2X ShenzhenJiayoudaElectronicsCo.,Ltd(“theapplicant”)certifiesthattheequipmentfor whichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceivingan equipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. ShenzhenJiayoudaElectronicsCo.,Ltd(“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. ShenzhenJiayoudaElectronicsCo.,Ltd(“theapplicant”)certifiesthattheequipmentfor whichauthorizationissoughtdoesnotincludecybersecurityoranti-virussoftware producedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsandassignees, includingequipmentwithintegratedKasperskyLab,Inc.(oranyofitssuccessorsand assignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01 CoveredEquipmentGuidancesectionB(2a). Signed: Printedname:JinpingHe Title:Manager CompanyName:ShenzhenJiayoudaElectronicsCo.,Ltd Date:2026.4.24

2026.4.24 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeShenzhenBangceTestingTechnologyCo.,Ltd.toacton ourbehalfinallmattersrelatingtoapplicationforequipmentauthorization,includingthesigningofall documentsrelatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothedenialof benefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21 U.S.C.853(a). Sincerely, Name:JinpingHe Title:Manager Company:ShenzhenJiayoudaElectronicsCo.,Ltd

2026.4.24 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2BFL4-BT12-2X ProductName:WirelessEarphone RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommission’srules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: (Listherethedocumentsforwhichyouareseekingconfidentiality–forexample...) Schematics Blockdiagram  Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. Name:JinpingHe Title:Manager Company:ShenzhenJiayoudaElectronicsCo.,Ltd

ReportNo.:CISRR26041536301 Page 60 of 63 9.EXTERNALANDINTERNALPHOTOS 9.1.ExternalPhotos ReportNo.:CISRR26041536301 Page 61 of 63

Label Size:30mm*13mm Productname:WirelessEarphone ModelName:BT12-2X FCCID:2BFL4-BT12-2X LabelLocation

ReportNo.:CISRR26041536301 Page 62 of 63 9.2.InternalPhotos ReportNo.:CISRR26041536301 Page 63 of 63 ------Endofthereport----- ANT

ReportNo.:CISRR26041536302 Reporttemplateversion:CISE-TR-001-A0Page:1of6 TESTREPORT RFExposureEvaluation ReportNo.: CISRR26041536302 ProjectNo.: CISR260415363 FCCID:2BFL4-BT12-2X Applicant:ShenzhenJiayoudaElectronicsCo.,Ltd Address: 711,BuildingC,LangkouBaokeIndustrialZone,Longhua District,ShenzhenCity,China Manufacturer: ShenzhenJiayoudaElectronicsCo.,Ltd Address: 711,BuildingC,LangkouBaokeIndustrialZone,Longhua District,ShenzhenCity,China ProductName: WirelessEarphone TradeMark:- Model/Typereference:BT12-2X ListedModel(s):- Standard:47CFRPart2.1093 Issuedate:April23,2026 Testresult:Complied Reviewedby:MorganTan Approvedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangceTesting TechnologyCo.,Ltd. ReportNo.:CISRR26041536302 Reporttemplateversion:CISE-TR-001-A0Page:2of6 Contents 1.APPLICABLESTANDARD..............................................................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.RADIOSPECIFICATIONDESCRIPTION........................................................................................................4 4.SIMULTANEOUSTRANSMISSIONANALYSIS.............................................................................................4 5.TESTRESULT.................................................................................................................................................5 5.1.STANDALONETRANSMISSION.................................................................................................................5 5.2.SIMULTANEOUSTRANSMISSION.............................................................................................................6 ReportNo.:CISRR26041536302 Reporttemplateversion:CISE-TR-001-A0Page:3of6 1.APPLICABLESTANDARD 47CFRPart2.1093:Radiofrequencyradiationexposureevaluation:portabledevices ANSIC95.1–2019:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequency ElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRF ExposureProceduresandEquipmentAuthorizationPolicies. 47CFRPart1.1307:Actionsthatmayhaveasignificantenvironmentaleffect,forwhichEnvironmental Assessments(EAs)mustbeprepared. 2.REPORTVERSION VersionNo.IssuedateDescription 00April23,2026Original ReportNo.:CISRR26041536302 Reporttemplateversion:CISE-TR-001-A0Page:4of6 3.RADIOSPECIFICATIONDESCRIPTION Bluetooth Supportedtype:BREDRLE-1Mbps LE-2Mbps Note:PleaserefertoRFreportfordetailedtechnicalspecifications 4.SIMULTANEOUSTRANSMISSIONANALYSIS ThesedevicesuseasingletransmittermoduleandantennaforbothBT,BTcannottransmitsimultaneously. ReportNo.:CISRR26041536302 Reporttemplateversion:CISE-TR-001-A0Page:5of6 5.TESTRESULT 5.1.Standalonetransmission Limit: KDB447498D01v06,Clause4.3.1a) For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-g SARtestexclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation31The resultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. Result: Passed TestData Radiotype Frequency (GHz) Maximum output power #1 (dBm) Antenna gain #2 (dBi) Maximum EIRP #3 (dBm) Maximum tune-up EIRP #4 (dBm) Minimum distance (mm) Evaluated value LimitResult Bluetooth2.4021.462.64.065.005.000.98023.00PASS Note #1:ThisvaluecomesfromtheRFtestreport. #2:Thisvalueisdeclaredbytheapplicant. #3:EIRP=Maximumoutputpower+Antennagain. #4:Thisvalueisdeclaredbytheapplicant. ReportNo.:CISRR26041536302 Reporttemplateversion:CISE-TR-001-A0Page:6of6 5.2.Simultaneoustransmission Limit: KDB447498D01v06,Clause4.3.2,47CFRPart1.1307 InthecaseofxedRFsourcesoperatinginthesametime-averagingperiod,orof multiplemobileorportableRFsourceswithinadeviceoperatinginthesametime averagingperiod,ifthesumofthefractionalcontributionstotheapplicablethresholds islessthanorequalto1asindicatedinthefollowingequation. Where a=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(B)ofthissectionforP,includingexistingexempttransmittersandthosebeing added. b=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(C)ofthissectionforThresholdERP,includingexistingexempttransmittersand thosebeingadded. c=numberofexistingfixed,mobile,orportableRFsourceswithknownevaluationforthespeci edminimumdistanceincludingexistingevaluatedtransmitters. P j =theavailablemaximumtime-averagedpowerortheERP,whicheverisgreater,forxed, mobile,orportableRFsourceiatadistancebetween0.5cmand40cm(inclusive). P th,j =theexemptionthresholdpower(P)accordingtoparagraph(b)(3)(i)(B)ofthissectionfor xed,mobile,orportableRFsourcei. ERP j =theERPoffixed,mobile,orportableRFsourcej. ERP th,j =exemptionthresholdERPforfixed,mobile,orportableRFsourcej,atadistanceofat leastλ/2πaccordingtotheapplicableformulaofparagraph(b)(3)(i)(C)ofthissection. Evaluated k =themaximumreportedSARorMPEoffixed,mobile,orportableRFsourcekeither inthedeviceoratthetransmittersitefromanexistingevaluationatthelocationofexposure. ExposureLimit k =eitherthegeneralpopulation/uncontrolledmaximumpermissibleexposure (MPE)orspecicabsorptionrate(SAR)limitforeachxed,mobile,orportableRFsourcek, asapplicablefrom§1.1310ofthischapter. Result:NotApplicable --------EndofReport--------

ReportNo.:CISRR26041536301 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of56 TESTREPORT ReportNo.CISRR26041536301 ProjectNo.CISR260415363 FCCID2BFL4-BT12-2X ApplicantShenzhenJiayoudaElectronicsCo.,Ltd Address 711,BuildingC,LangkouBaokeIndustrialZone,Longhua District,ShenzhenCity,China ManufacturerShenzhenJiayoudaElectronicsCo.,Ltd Address 711,BuildingC,LangkouBaokeIndustrialZone,Longhua District,ShenzhenCity,China ProductNameWirelessEarphone Trademark- Model/TypereferenceBT12-2X ListedModel(s)- Standard 47CFRPart15.247 DateofsamplereceiptApril16,2026 TestdateApril16,2026toApril23,2026 IssuedateApril23,2026 TestresultComplied Reviewedby:MorganTan Approvedby:HansHu ReportNo.:CISRR26041536301 Page 2 of 56 Contents 1.STANDARDANDAPPLICABLETESTMETHODS........................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.TESTDESCRIPTION.......................................................................................................................................4 4.SUMMARY........................................................................................................................................................5 4.1.ProductDescription*..................................................................................................................................5 4.2.RadioSpecificationDescription*..............................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................6 4.4.Deviationfromstandards...........................................................................................................................6 4.5.TestingSite...................................................................................................................................................6 5.TESTCONFIGURATION.................................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Descriptionsoftestmode...........................................................................................................................7 5.3.Supportunitusedintestconfiguration....................................................................................................7 5.4.Testsampleinformation.............................................................................................................................7 5.5.Environmentalconditions...........................................................................................................................7 5.6.Statementofthemeasurementuncertainty.............................................................................................8 5.7.EquipmentUsedduringtheTest................................................................................................................9 6.TESTRESULTS.............................................................................................................................................11 6.1.EvaluationResults(Evaluation)...............................................................................................................11 6.1.1.AntennaRequirement.............................................................................................................................11 6.2.RadioSpectrumMatterTestResults(RF)...............................................................................................12 6.2.1.ConductedEmissionatACpowerline.................................................................................................12 6.2.2.20dBBandwidth......................................................................................................................................15 6.2.3.MaximumConductedOutputPower.....................................................................................................17 6.2.4.ChannelSeparation................................................................................................................................18 6.2.5.NumberofHoppingFrequencies..........................................................................................................19 6.2.6.DwellTime...............................................................................................................................................20 6.2.7.Conductedbandedgeandspuriousemission...................................................................................22 6.2.8.Radiatedbandedgeemission...............................................................................................................24 6.2.9.RadiatedSpuriousEmission(below1GHz).........................................................................................30 6.2.10.RadiatedSpuriousEmission(Above1GHz)......................................................................................34 7.APPENDIXREPORT......................................................................................................................................42 7.1.ConductedOutputPower.........................................................................................................................42 7.2.20dBBandwidth.........................................................................................................................................44 7.3.NumberOfHoppingChannel..................................................................................................................…

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SMDCERAMICANTENNA DataSheet YF3216C24595 For2400-2484MHz 3.2x1.6mm[EIA1206] AddressRoom 412, Building 7, Phase II, Nanshan Cloud Valley Pioneer Park, No. 2, Pingshan 1st Road, Pingshan Community, Taoyuan Sub-district, Nanshan District, Shenzhen SMDCERAMICANTENNA DataSheet FEATURES ・ Lightweight,compact ・ Widebandwidth,lowcost ・Built-inantennawithhighgain APPLICATIONS ・ Bluetooth ・ IEEE802.11g/b ・ Zigbeesystems,etc... SHAPESANDDIMENSIONSDimensionsinmm L WA H 3.2±0.10 1.6 ± 0.10 0.40 ± 0.200.50 ± 0.10 SMDCERAMICANTENNA DataSheet ELECTRICSPECIFICATIONS 5-1.ElectricalTable CharacteristicsSpecificationsUnit OutlineDimensions3.2x1.6x0.5mm WorkingFrequency2400~2500MHz VSWR2Max. Impedance50  PolarizationLinearPolarization Gain Peak2.6(typical)dBi Efficiency78(typical)% PARTNUMBERINGSYSTEM YF3216C24595 Company Size Frequency CustomerID SMDCERAMICANTENNA DataSheet EVALUATIONBOARD SMDCERAMICANTENNA DataSheet RADIATIONPATTERNS 2.4GHzWLANBAND ◎ 3DGainPattern(2400MHz) 2.18 1.34 0.5 -0.34 -1.18 -2.02 -2.86 -3.7 -4.54 -5.38 -6.22 -7.07 -7.91 -8.75 -9.59 -10.4 -11.3 -12.1 2.6 1.69 0.78 -0.13 -1.05 -1.96 -2.87 -3.78 -4.69 -5.61 -6.52 -7.43 -8.34 -9.26 -10.2 -11.1 -12 -12.9 ◎ 3DGainPattern(2480MHz) 1.81 1.09 0.36 -0.37 -1.09 -1.82 -2.54 -3.27 -4 -4.72 -5.45 -6.18 -6.9 -7.63 -8.35 -9.08 -9.81 -10.5 SMDCERAMICANTENNA DataSheet FREQUENCYCHARACTERISTICS 口 EFFICIENCYANDVSWR SMDCERAMICANTENNA DataSheet RECOMMENDEDREFLOWPROFILE 2 60°C 2040s 217°C 150200°C Preheating 60-150s 60-180s Time(s) SMDCERAMICANTENNA DataSheet PACKAGINGSTYLE 口 REELDIMENSIONS □TAPEDIMENSIONS FeatureSpecifications Tolerances W P 8 .00 4.00 ±0.30 ±0.10 E 1.75 ± 0 .1 0 F 3.50±0.10 P2 2.00±0.10 D 1.50 +0.10 -0.00 Po 10Po 4. 00 40.00 ± 0 .1 0 ±0.20 TypingQuantity:5000piecesper7”reel

ReportNo.:CISRR26041536301 Page 58 of 63 8.TESTSETUPPHOTOS ConductedEmissionatACpowerline Radiatedbandedgeemission RadiatedSpuriousEmission(Above1GHz) ReportNo.:CISRR26041536301 Page 59 of 63 RadiatedSpuriousEmission(below1GHz)