2BCM7-Q71Bluetooth earphones

FCCID:2BCM7-Q71 FCC WARNING 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. Note: The Grantee is not responsible for any changes or modifications not expressly approved by the party responsible for compliance. such 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. modifications could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. This equipment complies with FCC's RF radiation exposure limits set forth for an uncontrolled environment. This device and its antenna(s) must not be co-located or conjunction with any other antenna or transmitter. +1.42dBm

ShenzhenChaoyinElectronicsCo.,Ltd Address:515,5thFloor,Building405,SandaIndustrialZonZhenxingRoad,LicunCommunity, HuaqiangbeiStreetFutianDistrict,Shenzhen,China Date:2026-08-20 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Ref:AttestationStatementsPart2.911(d)(7)Filing SUBJECT:FCCApplicationforFCCID:2BCM7-Q71 FRN:0034153734 (“ShenzhenChaoyinElectronicsCo.,Ltd”)certifiesthat,asofthedateofthefilingofthe application,GOLDENVICTORYINTERNATIONALTRADINGCOLTDisourdesignatedU.S. agentforserviceofprocessfortheabovereferencedFCCID.(“ShenzhenChaoyin ElectronicsCo.,Ltd”)acceptstomaintainanagentfornolessthanoneyearafterthegrantee hasterminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. GOLDENVICTORYINTERNATIONALTRADINGCOLTDaccepts,asofthedateofthefiling oftheapplication,theobligationofthedesignatedU.S.agentforserviceofprocessforthe abovereferencedFCCID. DesignatedU.S.AgentInformation: Name:GOLDENVICTORYINTERNATIONALTRADINGCOLTD Address:11016THSTREETSUITE1400DENVER,CO80202UnitedStates FRN：0036377570 ContactPerson:LeonHowar Tel.:(337)255-0461 Email:[email protected] Sincerely, Signedonbehalfof（ShenzhenChaoyin ElectronicsCo.,Ltd） SignedonbehalfofGOLDENVICTORY INTERNATIONALTRADINGCOLTD Name:AMYMaName:LeonHowar Title:ManagerTitle:Manager Date:2026-08-20Date:2026-08-20

Rev1/26/2023 (ShenzhenChaoyinElectronicsCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-08-20 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BCM7-Q71 (“ShenzhenChaoyinElectronicsCo.,Ltd”)certifiesthattheequipmentforwhichauthorizationissought isnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. (“ShenzhenChaoyinElectronicsCo.,Ltd”)certifiesthattheequipmentforwhichauthorizationissought doesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.orany ofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature): (Applicantprintedname):AMYMa Rev1/26/2023 (ShenzhenChaoyinElectronicsCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-08-20 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BCM7-Q71 (“ShenzhenChaoyinElectronicsCo.,Ltd”)certifiesthat,asofthedateofthefilingoftheapplication, ShenzhenChaoyinElectronicsCo.,LtdisnotidentifiedontheCoveredList(asaspecificallynamedentity oranyofitssubsidiariesoraffiliates)asanentityproducing“covered”equipment. Sincerely, (Applicantsignature): (Applicantprintedname):AMYMa

ShenzhenChaoyinElectronicsCo.,Ltd Date:August20,2026 ProductModelNumber:Q71 FCCID:2BCM7-Q71 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:+8613724280687 Onbehalfof:ShenzhenChaoyinElectronicsCo.,Ltd

ShenzhenChaoyinElectronicsCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August20,2026 Subject;RequestforConfidentiality FCCID:2BCM7-Q71 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:AMYMa Title:Manager

FCCID:2BCM7-Q71 EUTPHOTOS(ExternalPhotos) FCCID:2BCM7-Q71 FCCID:2BCM7-Q71 FCCID:2BCM7-Q71 FCCID:2BCM7-Q71 ※※※※※ENDOFREPORT※※※※※

Shenzhen Chaoyin Electronics Co., Ltd Labeldeclaration Regards Sincerely Client’s signature: Client’s name / title :AMY Ma/Manager Contact information / address:515, 5th Floor, Building 4 05, Sanda I ndustrial Zon Zhenxing Road,Licun Community, Huaq iangbei Street Product description:Bluetooth earphones Model name:Q71 FCC ID:2BCM7-Q71 The measurement ofBluetooth earphones: Length (30mm) Width(22mm)High(26mm) .The Bluetooth earphones are too small and irregularly shaped to print labels, so the labels are included in the instruction manual and on the outer packaging. Futian District, Shenzhen, China Q71Q71

FCCID:2BCM7-Q71 EUTPHOTOS(InternalPhotos) FCCID:2BCM7-Q71 FCCID:2BCM7-Q71 FCCID:2BCM7-Q71 ※※※※※ENDOFREPORT※※※※※ ANT ANT

· FCCID:2BCM7-Q71 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093，Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,by measurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTest ExclusionThresholdcondition(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, ForBluetooth Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency (MHz) Min. Distance (mm) Calc. thresholds limit LeftBT0.910±11.26244150.3943.0 RightBT1.421±11.58244150.4943.0 SoaSARtestisnotrequired

ProjectNo.:ZKT-260820L1295E Page 1 of 147 FCCTESTREPORT FCCID:2BCM7-Q71 ReportNumber. .................................... :ZKT-260820L1295E DateofTest ...................................................... :July31,2026-Aug.14,2026 Dateofissue ......................................... :Aug.14,2026 Totalnumberofpages ......................... 147 TestResult .......................................... : PASS TestingLaboratory...........................: ShenzhenZKTTechnologyCo.,Ltd. Address ............................................... : 1/F,No.101,BuildingB,No.6,TangweiCommunityIndustrial Avenue,FuhaiStreet,Bao'anDistrict,Shenzhen,China Applicant'sname.............................: ShenzhenChaoyinElectronicsCo.,Ltd Address ............................................... : 515,5thFloor,Building405,SandaIndustrialZonZhenxing Road,LicunCommunity,HuaqiangbeiStreetFutianDistrict, Shenzhen,China Manufacturer'sname......................: ShenzhenChaoyinElectronicsCo.,Ltd Address...............................................: 515,5thFloor,Building405,SandaIndustrialZonZhenxing Road,LicunCommunity,HuaqiangbeiStreetFutianDistrict, Shenzhen,China Testspecification: Standard ................................................ : FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10-2020+Cor.1-2023+C63.10a-2024+Erratato C63.10a-2024 Testprocedure.....................................: / Non-standardtestmethod ................ :N/A TestReportFormNo. ....................... : TRF-EL-112_V0 TestReportForm(s)Originator.....: ZKTTesting MasterTRF........................................: Dated:2021-04-22 ThisdevicedescribedabovehasbeentestedbyZKT,andthetestresultsshowthattheequipmentunder test(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsample identifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofZKT,thisdocumentmay bealteredorrevisedbyZKT,personalonly,andshallbenotedintherevisionofthedocument. Productname ..................................... :Bluetoothearphones Trademark ........................................... : N/A Model/Typereference ......................... : Q71 Ratings .................................................. :Input:DC5VorDC3.7VRechargeableLi-ionbattery ProjectNo.:ZKT-260820L1295E Page 2 of 147 Testingprocedureandtestinglocation: TestingLaboratory .......................................... :ShenzhenZKTTechnologyCo.,Ltd. Address............................................................:1/F,No.101,BuildingB,No.6,TangweiCommunity IndustrialAvenue,FuhaiStreet,Bao'anDistrict, Shenzhen,China JimLiu Testedby(name+signature).......................: JacksonFang Reviewer(name+signature).......................: LakeXie Approved(name+signature).......................: ProjectNo.:ZKT-260820L1295E Page 3 of 147 TableofContents Page 1.VERSION.......................................................................................................................................5 2.TESTSUMMARY........................................................................................................................6 2.1TESTFACILITY..............................................................................................................................7 2.2MEASUREMENTUNCERTAINTY...........................................................................................7 3.GENERALINFORMATION......................................................................................................8 3.1GENERALDESCRIPTIONOFEUT........................................................................................8 3.2TestSetupConfiguration.............................................................................................................9 3.3SupportEquipment......................................................................................................................10 3.4TestMode......................................................................................................................................11 3.5EQUIPMENTSLISTFORALLTESTITEMS.....................................................................12 4.EMCEMISSIONTEST.............................................................................................................14 4.1Conductedemissions.................................................................................................................14 4.1.1POWERLINECONDUCTEDEMISSIONLimits............................................................14 4.1.2TESTPROCEDURE...............................................................................................................14 4.1.3DEVIATIONFROMTESTSTANDARD............................................................................14 4.1.4TESTSETUP............................................................................................................................14 4.1.5EUTOPERATINGCONDITIONS.......................................................................................15 4.1.6TestResult.................................................................................................................................15 4.2Radiatedemissions.....................................................................................................................16 4.2.1RadiatedEmissionLimits......................................................................................................16 4.2.2TESTPROCEDURE...............................................................................................................16 4.2.3DEVIATIONFROMTESTSTANDARD............................................................................17 4.2.4TESTSETUP............................................................................................................................17 4.2.5EUTOPERATINGCONDITIONS.......................................................................................18 4.2.6TESTRESULTS........................................................…

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2.4GHz 1608 Chip Antenna: RANT1608F245C04 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT0603F245 (A)(B)(C)(D) ElectricalSpecificatio C (E) 04 (F) n DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 1.6x0.8mm( ± 0.1mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=5 WorkingFrequencyRange2400~2500MHz Bandwidth120MHz(Min.) PeakGain2.7dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) Dimension(mm) L 1.60±0.10 W 0.80±0.10 T 0.45±0.10 咏成國際科技有限公司 電話 :13530576606 RAINInternationalTechnologyCo.,Ltd. TEL:13530576606 2.4GHz 1608 Chip Antenna: RANT1608F245C04 _ 1 EvaluationBoardReference PCBDimensionUnit:mm ReturnLoss&Radiation 2.4GHz 1608 Chip Antenna: RANT1608F245C04 _ 2.4GHz 1608 Chip Antenna: RANT1608F245C04 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 16087”4K/Reel 4.0±0.5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType1608 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 _ 2.4GHz 1608 Chip AntennaRANT1608F245C04 Reliability Table TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz 1608 Chip Antenna: RANT1608F245C04 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 12019/03/01NewDatasheet 22020/02/22Add2Dradiationcharacteristic

FCCID:2BCM7-Q71 EUTTESTPHOTOS Rightearphone FCCID:2BCM7-Q71 Leftearphone ※※※※※ENDOFREPORT※※※※※