2AB73-2025Smart Watch

The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Joint Chinese Ltd Add: Building 6, Huafeng Tech Park, Luotian Industrial Area, Songgang Town, Baoan Shenzhen China Date: 2021-7-26 FCC ID: 2AB73-2025 Dear Sir/Madam, We, Joint Chinese Ltd Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: Smart Watch Model no.: 2025, 2025A, 2025B, 2025C, 2025D, 2025E, 2025F, 2025G Sincerely, Name/Title： Kathy Zhao/Export Sales Manager Company: Joint Chinese Ltd Address: Building 6, Huafeng Tech Park, Luotian Industrial Area, Songgang Town, Baoan Shenzhen China Phone: 86-755-33180892 Fax: 86-755-33180893 E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2021-7-26> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2AB73-2025 2025 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Kathy Zhao/Export Sales Manager Company: Joint Chinese Ltd Address: Building 6, Huafeng Tech Park, Luotian Industrial Area, Songgang Town, Baoan Shenzhen China Phone: 86-755-33180892 Fax: 86-755-33180893 E-Mail: [email protected]

Joint Chinese Ltd Building 6, Huafeng Tech Park, Luotian Industrial Area, Songgang Town, Baoan Shenzhen China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2021-7-26 To whom it may concern: We, Joint Chinese Ltd the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2AB73-2025 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Kathy Zhao/Export Sales Manager Company: Joint Chinese Ltd Address: Building 6, Huafeng Tech Park, Luotian Industrial Area, Songgang Town, Baoan Shenzhen China Phone: 86-755-33180892 Fax: 86-755-33180893 E-Mail: [email protected]

SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 EXTERIORPHOTOGRAPHS Fig.1 Fig.2 SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Fig.3 Fig.4 SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Fig.5 Fig.6 SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Fig.7

SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page 1 of1 LabelandLocation Size:L2.0cm*W0.5cm LabelLocation SmartWatch ModelNo.:2025 FCCID:2AB73-2025

SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 INTERIORPHOTOGRAPHS Fig.1 Fig.2 SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Fig.3 Fig.4 BTAntenna SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Fig.5 Fig.6 SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 Fig.7 Fig.8

SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 ___________________________________________________________________________ Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page 1 of 3 FCCRFExposureEvaluation 1.ProductInformation FCCID:2AB73-2025 Productname:SmartWatch TestModel:2025 AdditionalModelNo.:2025A,2025B,2025C,2025D,2025E,2025F,2025G ModelDeclaration : PCBboard,structureandinternalofthesemodel(s)arethesame,So noadditionalmodelsweretested Powersupply: Input:DC5V DC3.7VbyRechargeableLi-ionBattery,240mAh Bluetooth:2402MHz-2480MHz ChannelNumber:40channelsforBluetoothV5.1(BTLE) ChannelSpacing:2MHzforBluetoothV5.1(BTLE) ModulationType:GFSKforBluetoothV5.1(BTLE) BluetoothVersion:V5.1 AntennaType:InternalAntenna AntennaGain:0dBi(Max.) Hardwareversion:V2.0 Softwareversion:V110 Exposurecategory:Generalpopulation/uncontrolledenvironment EUTType:ProductionUnit DeviceType:PortableDevice SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 ___________________________________________________________________________ Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page 2 of 3 2. EvaluationmethodandLimit AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1StandaloneSARtest exclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures, standalone1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions, bymeasurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTestExclusion Thresholdcondition,listedbelow,issatisfied.Thesetestexclusionconditionsarebasedonsource-based time-averagedmaximumconductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfor tune-uptolerance,andtheminimumtestseparationdistancerequiredfortheexposureconditions.22The minimumtestseparationdistanceisdeterminedbythesmallestdistancefromtheantennaandradiating structuresoroutersurfaceofthedevice,accordingtothehostformfactor,exposureconditionsand platformrequirements,toanypartofthebodyorextremityofauserorbystander(see5)ofsection4.1). ToqualifyforSARtestexclusion,thetestseparationdistancesappliedmustbefullyexplainedandjustified bytheoperatingconfigurationsandexposureconditionsofthetransmitterandapplicablehostplatform requirements,typicallyintheSARmeasurementorSARanalysisreport,accordingtotherequiredpublished RFexposureKDBprocedures.WhennootherRFexposuretestingorreportingisrequired,astatementof justificationandcompliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,to qualifyfortheSARtestexclusion.Whenrequired,thedevicespecificconditionsdescribedintheother publishedRFexposureKDBproceduresmustbesatisfiedbeforeapplyingtheseSARtestexclusion provisions;forexample,handheldPTTtwo-wayradios,handsets,laptops&tabletsetc.“ [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]·[√f(GHz)] ≤3.0for1-gSARand≤7.5for10-gextremitySAR,where: •f(GHz)istheRFchanneltransmitfrequencyinGHz •PoweranddistanceareroundedtothenearestmWandmmbeforecalculation •Theresultisroundedtoonedecimalplaceforcomparison •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmandfor transmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparationdistanceis<5 mm,adistanceof5mmaccordingtof)insection4.1isappliedtodetermineSARtestexclusion. Whenoneofthefollowingtestexclusionconditionsissatisfiedforallcombinationsofsimultaneous transmissionconfigurations,furtherequipmentapprovalisnotrequiredtoincorporatetransmitter modulesinhostdevicesthatoperateinthemixedmobileandportablehostplatformexposureconditions. ThegranteeisresponsiblefordocumentingthisaccordingtoClassIpermissivechangerequirements. AntennasthatqualifyforstandaloneSARtestexclusionmustapplytheestimatedstandaloneSARto determinesimultaneoustransmissiontestexclusion. a)The[∑of(thehighestmeasuredorestimatedSARforeachstandaloneantennaconfiguration,adjusted formaximumtune-uptolerance)/1.6W/kg]+[∑ofMPEratios]is≤1.0. b)TheSARtopeaklocationseparationratiosofallsimultaneouslytransmittingantennapairsoperatingin portabledeviceexposureconditionsareall≤0.04,andthe[∑ofMPEratios]is≤1.0. 3.ReferEvaluationMethod ANSIC95.1–2019:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoElectric,Magnetic,and ElectromagneticFields,0Hzto300GHz FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRFExposure ProceduresandEquipmentAuthorizationPolicies. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1093:Radiofrequencyradiationexposureevaluation:portabledevices SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 ___________________________________________________________________________ Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page 3 of 3 4.ConductedPowerResults <BTLE> ModeChannelFrequency(MHz)PeakConductedOutputPower(dBm) GFSK 02402-1.748 192440-1.223 392480-0.917 5.ManufacturingTolerance <BTLE> GFSK(Peak) ChannelChannel0Channel19Channel39 Target(dBm)-1.0-1.00 Tolerance±(dB)1.01.01.0 6.EvaluationResults 6.1StandaloneEvaluation <BTLE> Band/Modef(GHz) Antenna Distance (mm) RFoutputpowerSARTest Exclusion Threshold SARTest Exclusion dBmmW BTLEGFSK2.48051.01.25890.3965<3.0Yes Remark: 1.Outputpowerincludingtuneuptolerance; 2.Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmaccordingtof)insection4.1is appliedtodetermineSARtestexclusion. 6.2SimultaneousTransmissionforSARExclusion ThesamplesupportoneBTmodular.Noneedconsidersimultaneoustransmission. 7.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolledRFExposure andSARExclusionThresholdperKDB447498v06. .......................THEENDOFREPORT.........................

SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page1of14 AppendixA RFTestDataforBTV5.1(BTLE)(ConductedMeasurement) ProductName:SmartWatch TradeMark:N/A TestModel:2025 EnvironmentalConditions Temperature: 24.6C RelativeHumidity:54.1% ATMPressure:100.0kPa TestEngineer: KayHu Supervisedby:LiHuan A.1DutyCycle TestModeTestChannelAntDutyCycle[%]Verdict BTLE2440Ant1100PASS #imgrbble1hchnnav SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page2of14 A.2MaximumConductedPeakOutputPower ModeChannelConductPeakPower[dBm]Limit[dBm]Verdict BTLELCH-1.74830PASS BTLEMCH-1.22330PASS BTLEHCH-0.91730PASS TestGraphs LCH MCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page3of14 HCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page4of14 A.3MaximumPowerSpectralDensity ModeChannelPSD[dBm/3KHz]Limit[dBm/3KHz]Verdict BTLELCH-17.1078PASS BTLEMCH-16.4848PASS BTLEHCH-15.6468PASS TestGraphs LCH MCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page5of14 HCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page6of14 A.46dBBandwidth ModeChannel6dBBandwidth[MHz]Limit[MHz]Verdict BTLELCH0.6526 ≥0.5 PASS BTLEMCH0.6384 ≥0.5 PASS BTLEHCH0.6422 ≥0.5 PASS TestGraphs LCH MCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page7of14 HCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page8of14 A.5RFConductedSpuriousEmissions ModeChannelPref[dBm]Max.Level[dBm]Limit[dBm]Verdict BTLELCH-2.292-38.004-22.292PASS BTLEMCH-1.829-37.830-21.829PASS BTLEHCH-1.312-37.583-21.312PASS BTLE_LCH_Graphs Pref/BTLE/LCH Puw/BTLE/LCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page9of14 BTLE_MCH_Graphs Pref/BTLE/MCH Puw/BTLE/MCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page10of14 BTLE_HCH_Graphs Pref/BTLE/HCH Puw/BTLE/HCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page11of14 A.6Band-edgeforRFConductedEmissions ModeChannelCarrierPower[dBm] Max.SpuriousLevel [dBm] Limit[dBm]Verdict BTLELCH-2.805-49.994-22.81PASS BTLEHCH-1.266-48.060-21.27PASS TestGraphs LCH HCH SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page12of14 A.7Restrict-bandband-edgemeasurements Test Mode Test Chann el AntFreq. Power [dBm] Gain Ground Factor E [dBuV/m] Detector Limit [dBuV/ m] Verdi ct BTLE 2402 Ant12310.0-43.322.0051.93PEAK74PASS Ant12310.0-53.392.0041.87AV54PASS Ant12390.0-41.572.0053.68PEAK74PASS Ant12390.0-52.772.0042.48AV54PASS 2480 Ant12483.5-42.352.0052.91PEAK74PASS Ant12483.5-51.702.0043.55AV54PASS Ant12500.0-42.112.0053.15PEAK74PASS Ant12500.0-52.182.0043.07AV54PASS SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page13of14 Restrict-bandband-edgemeasurements_BTLE_2402_Ant1_PEAK Restrict-bandband-edgemeasurements_BTLE_2402_Ant1_AV SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Page14of14 Restrict-bandband-edgemeasurements_BTLE_2480_Ant1_PEAK Restrict-bandband-edgemeasurements_BTLE_2480_Ant1_AV

SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page 1 of 34 FCCTESTREPORT For JointChineseLtd SmartWatch TestModel:2025 AdditionalModelNo.:PleaseRefertoPage6 Preparedfor:JointChineseLtd Address:Building6,HuafengTechPark,LuotianIndustrialArea,Songgang Town,Baoan,Shenzhen,China Preparedby:ShenzhenLCSComplianceTestingLaboratoryLtd. Address:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei, ShajingStreet,BaoanDistrict,Shenzhen,518000,China Tel:(+86)755-82591330 Fax:(+86)755-82591332 Web:www.LCS-cert.com Mail:[email protected] Dateofreceiptoftestsample:June15,2021 Numberoftestedsamples:2 SampleNo.:210611003A-1,210611003A-2 Serialnumber:Prototype DateofTest:June15,2021~June21,2021 DateofReport:June23,2021 SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page 2 of 34 FCCTESTREPORT FCCCFR47PART15C(15.247) ReportReferenceNo......................:LCS210611003AEA DateofIssue.......................................:June23,2021 TestingLaboratoryName..............:ShenzhenLCSComplianceTestingLaboratoryLtd. Address................................................:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei, ShajingStreet,BaoanDistrict,Shenzhen,518000,China TestingLocation/Procedure............:FullapplicationofHarmonisedstandards■ PartialapplicationofHarmonisedstandards□ Otherstandardtestingmethod□ Applicant’sName.............................:JointChineseLtd Address................................................:Building6,HuafengTechPark,LuotianIndustrialArea,Songgang Town,Baoan,Shenzhen,China TestSpecification Standard..............................................: FCCCFR47PART15C(15.247) TestReportFormNo......................:LCSEMC-1.0 TRFOriginator....................................:ShenzhenLCSComplianceTestingLaboratoryLtd. MasterTRF.........................................:Dated2011-03 ShenzhenLCSComplianceTestingLaboratoryLtd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenLCSComplianceTestingLaboratoryLtd.isacknowledgedascopyrightownerandsourceofthe material.ShenzhenLCSComplianceTestingLaboratoryLtd.takesnoresponsibilityforandwillnot assumeliabilityfordamagesresultingfromthereader'sinterpretationofthereproducedmaterialduetoits placementandcontext. EUTDescription...............................:SmartWatch TradeMark..........................................:N/A TestModel...........................................:2025 Ratings.................................................:Input:5V,1A Battery:3.7V,240mAh Result...................................................:Positive Compiledby:Supervisedby:Approvedby: Diamond.Lu/AdministratorsJinWang/TechniqueprincipalGavinLiang/Manager SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page3of34 FCC--TESTREPORT TestModel...............................:2025 EUT.........................................:SmartWatch Applicant...............................:JointChineseLtd Address..................................:Building6,HuafengTechPark,LuotianIndustrialArea,Songgang Town,Baoan,Shenzhen,China Telephone...............................:/ Fax..........................................:/ Manufacturer........................:JointChineseLtd Address...................................:Building6,HuafengTechPark,LuotianIndustrialArea,Songgang Town,Baoan,Shenzhen,China Telephone...............................:/ Fax..........................................:/ Factory...................................:JointChineseLtd Address...................................:Building6,HuafengTechPark,LuotianIndustrialArea,Songgang Town,Baoan,Shenzhen,China Telephone...............................:/ Fax..........................................:/ TestResultPositive Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetestlaboratory. TestReportNo.:LCS210611003AEA June23,2021 Dateofissue SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page4of34 RevisionHistory RevisionIssueDateRevisionsRevisedBy 000June23,2021InitialIssueGavinLiang SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025ReportNo.:LCS210611003AEA Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofShenzhenLCSComplianceTestingLaboratoryLtd. Page5of34 TABLEOFCONTENTS 1.GENERALINFORMATION.....................................................................................................................................................6 1.1.DESCRIPTIONOFDEVICE(EUT)........................................................................................................................................6 1.2.HOSTSYSTEMCONFIGURATIONLISTANDDETAILS..........................................................................................................7 1.3.EXTERNALI/OCABLE..........................................................................................................................................................7 1.4.DESCRIPTIONOFTESTFACILITY........................................................................................................................................7 1.5.STATEMENTOFTHEMEASUREMENTUNCERTAINTY..........................................................................................................7 1.6.MEASUREMENTUNCERTAINTY...............................................................................................................................…

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SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 _______________________________________________________________________________________________ TESTSETUPPHOTOGRAPHS PhotoofRadiatedEmissionsMeasurement Below1GHz Above1GHz SHENZHENLCSCOMPLIANCETESTINGLABORATORYLTD.FCCID:2AB73-2025 _______________________________________________________________________________________________ PowerLineConductedEmission