2ADOZ-BT9748Bluetooth headphone

PRODUCT PICTURE DESCRIPTION OF MAIN PARTS: 1.On/Off, Play/Pause button, Answer/Hang up/Reject button 2.Volume up/Next song button 3.Volume down/previous song button 4.Mic 5.3.5mm AUX audio port 6.Indicator light 7.Charging 8.TF card port Type-C PAIRING STEPS 1. Press (1) for 3 seconds to put into pairing mode (the indi- cator light will alternate between red and blue). 2. Go to your Bluetooth ® settings on your device and find the Bluetooth ® pairing name “BT9748”. Pair your device, then it will be connected, when connected successfully, only blue light flash. PRODUCT USAGE 1. Power on: Press and hold the button (1) for about 3 seconds, until blue light flashes. 2. Power off: Press and hold button (1) for about 3 seconds, the red indicator light will flash three times and then device turns off. 3. Answer a call: when a call is coming in, Answer the call by pressing button (1) once. Press the button again to hang up. To reject a call press and hold (1) for about 2 seconds. 4. Redialing the last number: Double click the (1) button. 5. Next song/Volume up: Press button (2)quickly for next song, press and hold for volume up. 6. Previous song/Volume down: Press button (3)quickly for previous song, press and hold for volume down. 7. Play / Pause music: when you listen to the music, you can play or pause the song by pressing (1)button. 8. Reconnected: when reopen the Bluetooth ® mode, the headphone will reconnect to the nearest devices. 9. Automatic shutdown: If not connected for 5 minutes, the headphone will automatically turn off 10. Charging: Charging port with Type C USB charging cable. When charging, the indicator light is red and remains on, while the fully charged indicator light is of f USB CABLE INCLUDED WIRELESS HEADPHONE (BT9748) Instructions Manual DISPOSAL European Directive 2012/19/EU on waste electrical and electronic equipment (WEEE) requires that such equipment should not be disposed of in the normal urban solid waste stream, but should be collected separately in order to optimise the recovery and recycling flow of its component materials and prevent potential damage to health and the environment due to the presence of potentially dangerous substances. The symbol of the crossed-out bin is shown on all products to remind of it. The waste can be delivered to the appropriate collection points or delivered free of charge to the distributor when purchasing equivalent new equipment or without the obligation to purchase equipment smaller than 25 cm. For further information on the correct disposal of these devices, please contact the relevant public service department. Read and preserve, it contains important informations. PRODUCT SPECIFICATION Bluetooth ® standards: V5.3 Bluetooth ® Ef fective range: 10m Battery Capacity: 250mAh Standby time: Up to 200 hours Working time: Up to 16 hours(At 50% Volume) Charging time: Approx 2 hours Microphone: Built-in Charging Port: USB Type-C Driver Unit: 40mm Impedance: 32ohm Sensitivity: 105dB ±3dB Frequency Response: 20Hz - 20KHz 3 1 2 4 5 6 7 8 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

ShenzhenHengxintaiElectronicsCo.,Ltd. 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname:ShenzhenHengxintaiElectronicsCo.,Ltd. Address:Floor#4,Building#8,XinghuiIndustrialZone,Yanchuan,SonggangTown,Shenzhen,China ProductName:Bluetoothheadphone FCCID:2ADOZ-BT9748 Model(s):BT9748,BT9950,BT9958,BT9926,BT9945,BT9747,BT9749 2.911(d)(5)(i)EquipmentType We,[ShenzhenHengxintaiElectronicsCo.,Ltd.](“theapplicant”)certifythattheequipmentforwhich authorizationissoughtthroughcertificationisnot: Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules. Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:ZiyiHuangDate:2024.6.18 TitleandCompanyname:Manager/ShenzhenHengxintaiElectronicsCo.,Ltd. NOTE1 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

ShenzhenHengxintaiElectronicsCo.,Ltd. 2.911(d)(5)(ii)ApplicantAttestationv1.3 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname:ShenzhenHengxintaiElectronicsCo.,Ltd. Address:Floor#4,Building#8,XinghuiIndustrialZone,Yanchuan,SonggangTown,Shenzhen,China ProductName:Bluetoothheadphone FCCID:2ADOZ-BT9748 Model(s):BT9748,BT9950,BT9958,BT9926,BT9945,BT9747,BT9749 2.911(d)(5)(ii)Applicantfiling We,[ShenzhenHengxintaiElectronicsCo.,Ltd.](“theapplicant”)certifythat,asofthedateofthe filingoftheapplication,theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,established pursuantto§1.50002ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name:ZiyiHuangDate:2024.6.18 TitleandCompanyname:Manager/ShenzhenHengxintaiElectronicsCo.,Ltd. NOTE1 Deleteoptionnotapplicabletothisapplication. NOTE2 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

ShenzhenHengxintaiElectronicsCo.,Ltd. 2.911(d)(7)USAAgentv1.5 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:ShenzhenHengxintaiElectronicsCo.,Ltd. Address:Floor#4,Building#8,XinghuiIndustrialZone,Yanchuan,SonggangTown, Shenzhen,China ProductName:Bluetoothheadphone FCCID:2ADOZ-BT9748 Model(s):BT9748,BT9950,BT9958,BT9926,BT9945,BT9747,BT9749 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ShenzhenHengxintaiElectronicsCo.,Ltd.](“theapplicant”)designate [USAMEIHUATRADINGINC] NOTE1 forthepurposeofacceptingserviceofprocess onbehalfoftheapplicant. Applicantconsent:Weacknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherwethegranteehavepermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S., orattheconclusionofanyCommission-relatedadministrativeorjudicialproceeding involvingtheequipment,whicheverislater. Agentobligation:Weacknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,orattheconclusionofanyCommission-relatedadministrativeor judicialproceedinginvolvingtheequipment,whicheverislater. USAAgent CompanyName: USAMEIHUATRADINGINC FRN:0033406166 ContactName:HarleyQuinn Address: 5379PineValleyCtBoulderCO 80301UnitedStates TelephoneNo:1-312-363-9424 Applicant Companyname:ShenzhenHengxintai ElectronicsCo.,Ltd. Address:Floor#4,Building#8,Xinghui IndustrialZone,Yanchuan,Songgang Town,Shenzhen,China GranteeFRNNumber ： 0024120016 FCCGranteeCode:2ADOZ ContactName:ZiyiHuang TelephoneNo:0755-33925709 Email:[email protected] ShenzhenHengxintaiElectronicsCo.,Ltd. 2.911(d)(7)USAAgentv1.5 Signature: Title:manager Signature: Title:Manager Date:Jun17,2024Date:2024.6.18 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

ShenzhenHengxintaiElectronicsCo.,Ltd. AgentAuthorization Company:ShenzhenHengxintaiElectronicsCo.,Ltd. Address:Floor#4,Building#8,XinghuiIndustrialZone,Yanchuan,SonggangTown, Shenzhen,China ProductName:Bluetoothheadphone ModelNumber(s):BT9748,BT9950,BT9958,BT9926,BT9945,BT9747,BT9749 ProductDescription:Bluetoothheadphone WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2024.6.18 Name:ZiyiHuang Title:Manager Company:ShenzhenHengxintaiElectronicsCo.,Ltd.

ShenzhenHengxintaiElectronicsCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024.6.18 Subject;RequestforConfidentiality FCCID:2ADOZ-BT9748 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure 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:ZiyiHuang Title:Manager

ShenzhenHengxintaiElectronicsCo.,Ltd ModelDifference Productdescription:Bluetoothheadphone Modelname:BT9748 BT9950,BT9958,BT9926,BT9945,BT9747,BT9749 TradeName:N/A Onlyfordifferentmodelname Regards Sincerely Client’ssignature: Client’sname/title:ZiyiHuang/Manager Contactinformation/address:Floor#4,Building#8,XinghuiIndustrialZone, Yanchuan,SonggangTown,Shenzhen,China

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Labelandlabellocation 2cm Bluetoothheadphone FCCID:2ADOZ-BT9748 1cm

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FCCID:2ADOZ-BT9748 RFExposureEvaluation AccordingtoWS-1GeneralRFExposureGuidancev06andpart2.1093 ， Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-ghead orbodyand10-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, ForBT TestMode Max Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit GFSK-1.3640.73240250.226423.0 π/4-DQPSK-0.4740.90240250.277923.0 8-DPSK-1.4580.71240250.221573.0 SoaSARtestisnotrequired

InvertedFAntennaSpecification Summary ITEMANTSPEC ModelName2.4GANT Center Frequency HorizontalVertical 2400MHz2400MHz2500MHz2400MHz2400MHz2500MHz -1.26-0.76-0.58-5.25-2.46-1.86 MAX.Gain-0.58dB polarizationHorizontalandVertical AzimuthBeam Pattern Omni-directional Impedance50Ohm AntennaLength31.2mm ManufactureShenzhenBluetrumTechnologyCo.,Ltd. AntennaPhoto&Length(mm)

ProjectNo.:ZKT-2406116466E Page 1 of 71 FCCTESTREPORT FCCID:2ADOZ-BT9748 ReportNumber...................................: ZKT-2406116466E DateofTest......................................................:Jun.11,2024toJun.17,2024 Dateofissue ......................................... :Jun.17,2024 Totalnumberofpages.........................71 TestResult .......................................... : PASS TestingLaboratory. .......................... : ShenzhenZKTTechnologyCo.,Ltd. Address ............................................... : 1/F,No.101,BuildingB,No.6,TangweiCommunityIndustrial Avenue,FuhaiStreet,Bao'anDistrict,Shenzhen,China Applicant'sname ............................. : ShenzhenHengxintaiElectronicsCo.,Ltd Address...............................................: Floor#4,Building#8,XinghuiIndustrialZone,Yanchuan,Songgang Town,Shenzhen,China Manufacturer'sname......................: HuizhouHaomukTechnologyCo.,Ltd Address ............................................... : HaomukTechnologyPark,ZhuNaState,GaoTou,YuanzhouTown, BoLuoHuizhou Testspecification: Standard ................................................ : FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10:2013 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 ..................................... :Bluetoothheadphone Trademark...........................................:N/A Model/Typereference ......................... : BT9748 BT9950,BT9958,BT9926,BT9945,BT9747,BT9749 Ratings..................................................: Input:5V230mA Battery:3.7V,250mAh,0.925Wh , ProjectNo.:ZKT-2406116466E Page 2 of 71 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-2406116466E Page 3 of 71 TableofContents Page 1.VERSION..................................................................................................................................5 2.TESTSUMMARY...................................................................................................................6 2.1TESTFACILITY.........................................................................................................................7 2.2MEASUREMENTUNCERTAINTY......................................................................................7 3.1GENERALDESCRIPTIONOFEUT...................................................................................8 3.2TestSetupConfiguration......................................................................................................10 3.3SupportEquipment.................................................................................................................10 4.EMCEMISSIONTEST........................................................................................................13 4.1Conductedemissions............................................................................................................13 4.1.1POWERLINECONDUCTEDEMISSIONLimits.......................................................13 4.1.2TESTPROCEDURE..........................................................................................................13 4.1.3DEVIATIONFROMTESTSTANDARD.......................................................................13 4.1.4TESTSETUP.......................................................................................................................13 4.1.5EUTOPERATINGCONDITIONS..................................................................................14 4.1.6TestResult............................................................................................................................15 4.2Radiatedemissions................................................................................................................17 4.2.1RadiatedEmissionLimits.................................................................................................17 4.2.2TESTPROCEDURE..........................................................................................................17 4.2.3DEVIATIONFROMTESTSTANDARD.......................................................................18 4.2.4TESTSETUP.......................................................................................................................18 4.2.5EUTOPERATINGCONDITIONS..................................................................................19 4.2.6TESTRESULTS..................................................................................................................19 5.RADIATEDBANDEMISSIONMEASUREMENT........................................................28 5.1TestRequirement:..................................................................................................................28 5.2TESTPROCEDURE..............................................................................................................28 5.3DEVIATIONFROMTESTSTANDARD...........................................................................29 5.4TESTSETUP...............................................…

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