2BUTZ-C-50CD Player

FCCID:2BUTZ-C-50 ExternalPhotosoftheEUT Fig.1 Fig.2 FCCID:2BUTZ-C-50 Fig.3 Fig.4 FCCID:2BUTZ-C-50 Fig.5 Fig.6

FCCID:2BUTZ-C-50 labelandlocation Fig.1 FCCID:2BUTZ-C-50 CDPlayer Model:C-50 Input:5.0V2.0A ShenzhenYoufengAudioTechnologyCo.,Ltd. 39.86mm 25.13mm

FCCID:2BUTZ-C-50 InternalPhotosoftheEUT Fig.1 Fig.2 Bluetooth Antenna FCCID:2BUTZ-C-50 Fig.3 Fig.4

ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. 101#,BuildingK&BuildingT,TheSecondIndustrialZone,JiazitangCommunity, FenghuangStreet,GuangmingDistrict,Shenzhen,China RFExposureevaluation ReportReferenceNo........................: FCCID.................................................: GRCTR260102030-02 2BUTZ-C-50 Compiledby (position+printedname+signature) .. : TestingEngineerJimmyWang Supervisedby (position+printedname+signature)..: ProjectEngineerKelleyZhang Approvedby (position+printedname+signature)..: ManagerSamWang Dateofissue.........................................:Jan.30,2026 TestingLaboratoryName................:ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. Address ................................................. : 101#,BuildingK&BuildingT,TheSecondIndustrialZone, JiazitangCommunity,FenghuangStreet,GuangmingDistrict, Shenzhen,China Applicant’sname ............................... :ShenzhenYoufengAudioTechnologyCo.,Ltd. Address ................................................. : Room20,Building5,No.32JianlongStreet,Bao'anCommunity, YuanshanSubdistrict,LonggangDistrict,Shenzhen,China Testspecification .............................. : Standard................................................: 47CFR§2.1091 KDB447498D01v06 ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.isacknowledgedascopyrightownerand sourceofthematerial.ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.takesno responsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader'sinterpretationofthe reproducedmaterialduetoitsplacementandcontext. Testitemdescription ........................ :CDPlayer TradeMark............................................: / Manufacturer.........................................: ShenzhenYoufengAudioTechnologyCo.,Ltd. Model/Typereference.........................: C-50 ListedModels......................................: / HardwareVersion ............................... :V1.0 SoftwareVersion .................................. :V1.0 Frequency..............................................From2402MHzto2480MHz Ratings...................................................:5.0V2.0A(chargedbyPowerAdapter)or 3.7V4000mAh(ByLi-ionrechargeablebattery) Result.....................................................:PASS ReportNo.:GRCTR260102030-02Page2of9 TESTREPORT EquipmentunderTest:CDPlayer Model/Type:C-50 ListedModels:/ Applicant : ShenzhenYoufengAudioTechnologyCo.,Ltd. Address: Room20,Building5,No.32JianlongStreet,Bao'anCommunity, YuanshanSubdistrict,LonggangDistrict,Shenzhen,China Manufacturer : ShenzhenYoufengAudioTechnologyCo.,Ltd. Address: Room20,Building5,No.32JianlongStreet,Bao'anCommunity, YuanshanSubdistrict,LonggangDistrict,Shenzhen,China TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. ReportNo.:GRCTR260102030-02Page3of9 Contents 1.SUMMARY...............................................................................................................................................4 1.1.GeneralRemarks.........................................................................................................................................4 1.2.ProductDescription....................................................................................................................................4 1.3.EquipmentUnderTest................................................................................................................................4 1.4.ShortdescriptionoftheEquipmentunderTest(EUT)............................................................................4 1.5.EUTconfiguration........................................................................................................................................4 1.6.Modifications................................................................................................................................................5 2.TESTENVIRONMENT.......................................................................................................................6 2.1.Addressofthetestlaboratory...................................................................................................................6 2.2.TestFacility..................................................................................................................................................6 2.3.Environmentalconditions...........................................................................................................................6 2.4.Statementofthemeasurementuncertainty.............................................................................................6 3.METHODOFMEASUREMENT.....................................................................................................8 3.1.ApplicableStandard....................................................................................................................................8 3.2.Limit...............................................................................................................................................................8 3.3.MPECalculationMethod.............................................................................................................................8 3.4.AntennaInformation....................................................................................................................................9 3.5.ManufacturingTolerance............................................................................................................................9 4.EVALUATIONRESULT....................................................................................................................9 5.CONCLUSION..............................................................................…

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Antennaspec FCCID:2BUTZ-C-50 1.AntennaDescription: AntennatypePCBAntenna ModelT82A8 Frequencyrange2400MHz~2500MHz ManufacturerShenzhenFeiyuxinElectronicsCo.,LTD AddressNo.76,BaotongSouthRoad,LonggangDistrict,Shenzhen City,GuangdongProvince 2.AntennaPhoto: 3.AntennaEfficiencyandGain Frequency(MHz) Efficiency (dBi) Gain(dBi)Efficiency(%) 2400-4.030.9833.91% 2410-4.081.0140.84% 2420-3.500.0144.59% 2430-4.160.1850.75% 2440-3.930.6238.20% 2450-3.641.2038.99% 2460-3.600.5433.34% 2470-3.940.1949.53% 2480-3.860.3232.02% 2490-4.110.0358.38% 2500-4.060.6044.18% 4.AntennaRadiationPattern 2400MHz2450MHz2500MHz

ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. 101#,BuildingK&BuildingT,TheSecondIndustrialZone,JiazitangCommunity, FenghuangStreet,GuangmingDistrict,Shenzhen,China FCCPART15SUBPARTCTESTREPORT FCCPART15.247 ReportReferenceNo........................: FCCID.................................................: GRCTR260102030-01 2BUTZ-C-50 Compiledby (position+printedname+signature) .. : TestingEngineerJimmyWang Supervisedby (position+printedname+signature)..: ProjectEngineerKelleyZhang Approvedby (position+printedname+signature)..: ManagerSamWang Dateofissue.........................................:Jan.30,2026 TestingLaboratoryName................: ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd. Address ................................................. : 101#,BuildingK&BuildingT,TheSecondIndustrialZone,Jiazitang Community,FenghuangStreet,GuangmingDistrict,Shenzhen, China Applicant’sname...............................: ShenzhenYoufengAudioTechnologyCo.,Ltd. Address.................................................: Room20,Building5,No.32JianlongStreet,Bao'anCommunity, YuanshanSubdistrict,LonggangDistrict,Shenzhen,China Testspecification..............................: Standard................................................:FCCPart15.247 ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.isacknowledgedascopyrightownerand sourceofthematerial.ShenzhenGUORENCertificationTechnologyServiceCo.,Ltd.takesno responsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader'sinterpretationofthe reproducedmaterialduetoitsplacementandcontext. Testitemdescription ........................ : CDPlayer TradeMark ............................................ : / Manufacturer ......................................... : ShenzhenYoufengAudioTechnologyCo.,Ltd. Model/Typereference.........................: C-50 ListedModels......................................: / FirmwareVersion.................................:V1.0 HardwareVersion ................................ :V1.0 Modulation ........................................... : GFSK Frequency.............................................. From2402MHzto2480MHz Ratings ................................................... :5.0V2.0A(chargedbyPowerAdapter)or 3.7V4000mAh(ByLi-ionrechargeablebattery) Result.....................................................: PASS ReportNo.:GRCTR260102030-01Page 2 of 34 TESTREPORT EquipmentunderTest:CDPlayer Model/Type:C-50 ListedModels:/ Applicant : ShenzhenYoufengAudioTechnologyCo.,Ltd. Address: Room20,Building5,No.32JianlongStreet,Bao'an Community,YuanshanSubdistrict,Longgang District,Shenzhen,China Manufacturer : ShenzhenYoufengAudioTechnologyCo.,Ltd. Address: Room20,Building5,No.32JianlongStreet,Bao'an Community,YuanshanSubdistrict,Longgang District,Shenzhen,China TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. ReportNo.:GRCTR260102030-01Page 3 of 34 Contents 1TESTSTANDARDS..............................................................................................................................4 2SUMMARY.................................................................................................................................................5 2.1GeneralRemarks..........................................................................................................................................5 2.2ProductDescription.....................................................................................................................................5 2.3EquipmentUnderTest.................................................................................................................................5 2.4ShortdescriptionoftheEquipmentunderTest(EUT).............................................................................5 2.5EUTconfiguration.........................................................................................................................................5 2.6EUToperationmode.....................................................................................................................................6 2.7BlockDiagramofTestSetup.......................................................................................................................6 2.8RelatedSubmittal(s)/Grant(s)...................................................................................................................6 2.9Modifications.................................................................................................................................................6 3TESTENVIRONMENT........................................................................................................................7 3.1Addressofthetestlaboratory....................................................................................................................7 3.2TestFacility...................................................................................................................................................7 3.3Environmentalconditions............................................................................................................................7 3.4Summaryofmeasurementresults..............................................................................................................8 3.5Statementofthemeasurementuncertainty..............................................................................................8 3.6EquipmentsUsedduringtheTest..............................................................................................................9 4TESTCONDITIONSANDRESULTS.......................................................................................10 4.1ACPowerConductedEmission.....................................…

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FCCID:2BUTZ-C-50 TestSetupPhotosoftheEUT TestSetupPhoto(s)ofRadiatedEmissionsMeasurement Fig.1 Fig.2 FCCID:2BUTZ-C-50 TestSetupPhoto(s)ofConductedEmissionsMeasurement Fig.3 TestSetupPhoto(s)ofRFMeasurement Fig.4