2BKBS-DUALPRO2Wireless earphone

Lenford Far East Limited

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Application Details

Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Date of Grant: Oct 11, 2024
Application Purpose: Original Equipment
Date of Application: Oct 11, 2024
Equipment Note: Wireless earphone
Frequency Range: 2402.00000000 - 2480.00000000
Company: Lenford Far East Limited
Country: China

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Document Text

Text extracted from the exhibit documents filed with the FCC. Open a document above to read the original.

Users Manual

FCC Statement 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment. 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. RF Exposure Information The device has been evaluated to meet general RF exposure requirement. The device can be used in 0mm exposure condition, compliance with exposure requirements. Only in the stated conditions, the device is shown to fully comply with the FCC RF Exposure requirements of KDB 447498.

External Photos

Page1of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity ExternalPhotosoftheEUT Fig.1 Fig.2 Page2of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.3 Fig.4 Page3of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.5 Fig.6 Page4of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.7 Fig.8 Page5of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.9 Fig.10 Page6of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.11 Fig.12 Page7of7FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.13 Fig.14

ID Label/Location Info

Page1of1FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity LABELANDLOCATION Material:tagboard Glue:adhesivesticker Frontcolor:black Labelcolor:Mattsilver (Size:L2.0cmxW1.0cm) LabelLocation Wirelessearphone Model:Dual-Pro2 FCCID:2BKBS-DUALPRO2

Internal Photos

RF Exposure Info

Page1of4FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity FCCRFExposureEvaluation 1.ProductInformation Productname:Wirelessearphone TestModel:Dual-Pro2 AdditionalModelNo.:Edge,Prism,Eclipse,Warpbuds,Cyberwave,Warpbuds-2, Dye,Fusion,Vortex,Surge,Pulse,Snap,Float,Thump, Whisper,Hum,Clarity,Resonance,Hush,Ripple,Mingle, Trill,Haze,Gleam,Drift,Daze,Throb,Zephyr,Whirl,Aura, Charm,Muse,Radiance,Sizzle,Vocal,Singe,Clang,Lilt, Mellow,Jolt,Flicker,Syncopate,Flux,Resonate, Harmonize,Intone,Echo,Sonance,Timbre,Stride,Glide, Quake,Storm,Blaze,Fizz,Spectrum,Breeze,Nano,Twirl, Charge,Rampart,Flare,Cascade,Driftwave,Jive,Vapor, Chill,Blip,Hyper,Volt,Nexus,Titan,Illuminate,Thunder, Quasar,Spark,Sphere,Boost,Glimmer,Shimmer,Bolt, Byte,Wave,Thrust,Shadow,Nova,Riff,Zoom ModelDeclaration:PCBboard,structureandinternalofthesemodel(s)arethe same,Sonoadditionalmodelsweretested Ratings:Input:DC5V DC3.7VbyRechargeableLi-ionBattery,35mAh HardwareVersion:/ SoftwareVersion:/ BluetoothFrequencyRange:2402MHz~2480MHz ChannelNumber:79channelsforBluetoothV5.4(DSS) ChannelSpacing:1MHzforBluetoothV5.4(DSS) ModulationType:GFSK,π/4-DQPSK,8-DPSKforBluetoothV5.4(DSS) BluetoothVersion:V5.4 AntennaDescription:CeramicAntenna,1.15dBi(Max.) Exposurecategory:Generalpopulation/uncontrolledenvironment EUTType:ProductionUnit DeviceType:PortableDevice Page2of4FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity 2.EvaluationmethodandLimit AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1StandaloneSAR testexclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposureKDB procedures,standalone1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulation exposureconditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition,listedbelow,issatisfied.Thesetest exclusionconditionsarebasedonsource-basedtime-averagedmaximumconductedoutputpower oftheRFchannelrequiringevaluation,adjustedfortune-uptolerance,andtheminimumtest separationdistancerequiredfortheexposureconditions.22Theminimumtestseparationdistance isdeterminedbythesmallestdistancefromtheantennaandradiatingstructuresoroutersurfaceof thedevice,accordingtothehostformfactor,exposureconditionsandplatformrequirements,toany partofthebodyorextremityofauserorbystander(see5)ofsection4.1).ToqualifyforSARtest exclusion,thetestseparationdistancesappliedmustbefullyexplainedandjustifiedbythe operatingconfigurationsandexposureconditionsofthetransmitterandapplicablehostplatform requirements,typicallyintheSARmeasurementorSARanalysisreport,accordingtotherequired publishedRFexposureKDBprocedures.WhennootherRFexposuretestingorreportingis required,astatementofjustificationandcompliancemustbeincludedintheequipmentapproval,in lieuoftheSARreport,toqualifyfortheSARtestexclusion.Whenrequired,thedevicespecific conditionsdescribedintheotherpublishedRFexposureKDBproceduresmustbesatisfiedbefore applyingtheseSARtestexclusionprovisions;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≤50mm andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingtof)insection4.1isappliedto determineSARtestexclusion. Whenoneofthefollowingtestexclusionconditionsissatisfiedforallcombinationsof simultaneoustransmissionconfigurations,furtherequipmentapprovalisnotrequiredto incorporatetransmittermodulesinhostdevicesthatoperateinthemixedmobileandportablehost platformexposureconditions.ThegranteeisresponsiblefordocumentingthisaccordingtoClassI permissivechangerequirements.AntennasthatqualifyforstandaloneSARtestexclusionmust applytheestimatedstandaloneSARtodeterminesimultaneoustransmissiontestexclusion. a)The[∑of(thehighestmeasuredorestimatedSARforeachstandaloneantennaconfiguration, adjustedformaximumtune-uptolerance)/1.6W/kg]+[∑ofMPEratios]is≤1.0. b)TheSARtopeaklocationseparationratiosofallsimultaneouslytransmittingantennapairs operatinginportabledeviceexposureconditionsareall≤0.04,andthe[∑ofMPEratios]is≤ 1.0. 3.ReferEvaluationMethod ANSIC95.1–1999:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadio FrequencyElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevices RFExposureProceduresandEquipmentAuthorizationPolicies. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1093:Radiofrequencyradiationexposureevaluation:portabledevices Page3of4FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity 4.ConductedPowerResults <BT> ModeChannelFrequency(MHz)PeakConductedOutputPower(dBm) GFSK 02402-0.79 392441-0.39 7824801.08 π/4DQPSK 024021.05 3924410.25 782480-0.64 8DPSK 024020.17 3924410.54 782480-0.35 5.ManufacturingTolerance <BT> GFSK(Peak) ChannelChannel0Channel39Channel78 Target(dBm)001.0 Tolerance±(dB)1.01.01.0 π/4DQPSK(Peak) ChannelChannel0Channel39Channel78 Target(dBm)1.000 Tolerance±(dB)1.01.01.0 8DPSK(Peak) ChannelChannel0…

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Test Report

2.4GHz 3216 Chip Antenna Report: RANT3216F245C01 _ Application: Bluetooth, etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT3216F245C01 (A)(B)(C)(D)(E)(F) ElectricalSpecification ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 3.2x1.6mm( ± 0.2mm) (C)MaterialHighKmaterial (D)Frequency2400-2500MHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=01 WorkingFrequencyRange2400~2500MHz Bandwidth120MHz(Min.) PeakGain1.15 dBi (Max) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) Dimension(mm) L 3.20±0.20 W 1.60±0.20 T 0.45±0.20 咏成國際科技有限公司電話 :13530576606 RAINInternationalTechnologyCo.,Ltd. TEL:13530576606 2.4GHz3216ChipAntenna:RANT3216F245C01 _ 1 EvaluationBoardReference PCBDimensionAntennaLayoutReference Unit:mm ElectricalCharacteristics ReturnLoss&Radiation ReturnLoss Frequency(MHz) S11(dB) 2400-10.50 2450-30.62 2500-11.47 Radiation 2400MHz2450MHz2500MHz Efficiency82.52%85.26%83.01% PeakGain1.15dBi1.04 dBi Directivit 1.09 dBi y1.89dBi1.77 dBi1.81 dBi X Y Z 2400MHz 2450MHz 2500MHz 2.4GHz 3216 Chip Antenna R: RANT3216F245C01 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 32167”5K/Reel 9.0±0.5 60±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType3216 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 3216 Chip Antenna Report: RANT3216F245C01 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 3216 Chip Antenna Report: RANT3216F245C01 _ 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

Test Report

Page 1 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity AppendixA RF Test Data for BT (ConductedMeasurement) ProductName:Wirelessearphone Test Model:Dual-Pro2 EnvironmentalConditions Temperature: 23.6C RelativeHumidity:52.0% ATM Pressure:100.0 kPa Test Engineer:Jay Luo Supervisedby:Nick Peng Page 2 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity A.1 -20dBBandwidth ConditionModeFrequency(MHz)Antenna-20 dB Bandwidth(MHz)Limit -20 dB Bandwidth(MHz)Verdict NVNT1-DH52402Ant10.966N/APass NVNT1-DH52441Ant10.96N/APass NVNT1-DH52480Ant10.958N/APass NVNT2-DH52402Ant11.281N/APass NVNT2-DH52441Ant11.33N/APass NVNT2-DH52480Ant11.284N/APass NVNT3-DH52402Ant11.306N/APass NVNT3-DH52441Ant11.29N/APass NVNT3-DH52480Ant11.309N/APass Page 3 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity Test Graphs -20dBBandwidthNVNT1-DH52402MHzAnt1 -20dBBandwidthNVNT1-DH52441MHzAnt1 Page 4 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity -20dBBandwidthNVNT1-DH52480MHzAnt1 -20dBBandwidthNVNT2-DH52402MHzAnt1 Page 5 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity -20dBBandwidthNVNT2-DH52441MHzAnt1 -20dBBandwidthNVNT2-DH52480MHzAnt1 Page 6 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity -20dBBandwidthNVNT3-DH52402MHzAnt1 -20dBBandwidthNVNT3-DH52441MHzAnt1 Page 7 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity -20dBBandwidthNVNT3-DH52480MHzAnt1 Page 8 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity A.2 MaximumPeak ConductedOutputPower ConditionModeFrequency(MHz)AntennaConductedPower(dBm)Limit (dBm)Verdict NVNT1-DH52402Ant1-0.7921Pass NVNT1-DH52441Ant1-0.3921Pass NVNT1-DH52480Ant11.0821Pass NVNT2-DH52402Ant11.0521Pass NVNT2-DH52441Ant10.2521Pass NVNT2-DH52480Ant1-0.6421Pass NVNT3-DH52402Ant10.1721Pass NVNT3-DH52441Ant10.5421Pass NVNT3-DH52480Ant1-0.3521Pass Page 9 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity Test Graphs PowerNVNT1-DH52402MHzAnt1 PowerNVNT1-DH52441MHzAnt1 Page 10 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity PowerNVNT1-DH52480MHzAnt1 PowerNVNT2-DH52402MHzAnt1 Page 11 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo.: LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity PowerNVNT2-DH52441MHzAnt1 PowerNVNT2-DH52480MHzAnt1 Page 12 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity PowerNVNT3-DH52402MHzAnt1 PowerNVNT3-DH52441MHzAnt1 Page 13 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCSA09104189EA ShenzhenLCS ComplianceTestingLaboratoryLtd. Add: 101, 201 Bldg A & 301 Bldg C, Juji IndustrialPark Yabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel: +(86) 0755-82591330| E-mail:[email protected]| Web: www.lcs-cert.com Scan code to check authenticity PowerNVNT3-DH52480MHzAnt1 Page 14 of 60 FCC ID: 2BKBS-DUALPRO2ReportNo. : LCS…

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Test Report

Page 1 of 37 FCCID:2BKBS-DUALPRO2ReportNo.:LCSA09104189EA ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity FCCTESTREPORT FOR LenfordFarEastLimited Wirelessearphone TestModel:Dual-Pro2 AdditionalModelNo.:PleaseRefertoPage6 Preparedfor:LenfordFarEastLimited Address: Unit1606,16F.,ComwebPlaza12CheungYueStreet,LaiChi KokKowloon,HongKong,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:September24,2024 Numberoftestedsamples:2 SampleNo.:A240923127-1,A240923127-2 Serialnumber:Prototype DateofTest:September24,2024~September26,2024 DateofReport:September27,2024 Page 2 of 37 FCCID:2BKBS-DUALPRO2ReportNo.:LCSA09104189EA ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity FCCTESTREPORT FCCCFR47PART15C(15.247) ReportReferenceNo......................:LCSA09104189EA DateofIssue.......................................:September27,2024 TestingLaboratoryName..............:ShenzhenLCSComplianceTestingLaboratoryLtd. Address................................................: 101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei, ShajingStreet,BaoanDistrict,Shenzhen,518000,China TestingLocation/Procedure............ : FullapplicationofHarmonisedstandards■ PartialapplicationofHarmonisedstandards□ Otherstandardtestingmethod□ Applicant’sName.............................:LenfordFarEastLimited Address................................................:Unit1606,16F.,ComwebPlaza12CheungYueStreet,LaiChiKok Kowloon,HongKong,China TestSpecification Standard..............................................:FCCCFR47PART15C(15.247) TestReportFormNo.........................:TRF-4-E-148A/0 TRFOriginator....................................:ShenzhenLCSComplianceTestingLaboratoryLtd. MasterTRF.........................................:Dated2011-03 ShenzhenLCSComplianceTestingLaboratoryLtd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe ShenzhenLCSComplianceTestingLaboratoryLtd.isacknowledgedascopyrightownerandsourceofthe material.ShenzhenLCSComplianceTestingLaboratoryLtd.takesnoresponsibilityforandwillnot assumeliabilityfordamagesresultingfromthereader'sinterpretationofthereproducedmaterialduetoits placementandcontext. TestItemDescription.....................:Wirelessearphone TradeMark..........................................:N/A TestModel...........................................:Dual-Pro2 Ratings.................................................:Input:DC5V DC3.7VbyRechargeableLi-ionBattery,35mAh Result..................................................:Positive Compiledby:Supervisedby:Approvedby: KevinHuang/AdministratorCaryLuo/TechniqueprincipalGavinLiang/Manager Page 3 of 37 FCCID:2BKBS-DUALPRO2ReportNo.:LCSA09104189EA ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity FCC--TESTREPORT TestResult Positive Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetestlaboratory. TestReportNo.:LCSA09104189EA September27,2024 Dateofissue TestModel.............................. : Dual-Pro2 EUT......................................... : Wirelessearphone Applicant...............................:LenfordFarEastLimited Address...................................:Unit1606,16F.,ComwebPlaza12CheungYueStreet,LaiChiKok Kowloon,HongKong,China Telephone...............................: / Fax..........................................:/ Manufacturer.........................: ShenzhenYaleElectronicsCo.,Ltd Address...................................: 4thFloor,Building2,YujingtaiIndustrialPark,HuaxingRoad,Dalang, LonghuaNewDistrict,Shenzhen,China Telephone...............................: / Fax..........................................:/ Factory...................................: ShenzhenYaleElectronicsCo.,Ltd Address...................................: 4thFloor,Building2,YujingtaiIndustrialPark,HuaxingRoad,Dalang, LonghuaNewDistrict,Shenzhen,China Telephone...............................:/ Fax..........................................:/ Page 4 of 37 FCCID:2BKBS-DUALPRO2ReportNo.:LCSA09104189EA ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity RevisionHistory ReportVersionIssueDateRevisionContentRevisedBy 000September27,2024InitialIssue--- Page 5 of 37 FCCID:2BKBS-DUALPRO2ReportNo.:LCSA09104189EA ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity TABLEOFCONTENTS DescriptionPage 1.GENERALINFORMATION.........................................................................................................6 1.1DescriptionofDevice(EUT)................................................................................................................6 1.2SupportequipmentList........................................................................................................................7 1.3External…

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Test Setup Photos

Page1of2FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity TestSetupPhotosoftheEUT TestSetupPhoto(s)ofRadiatedEmissionsMeasurement Fig.1 Fig.2 Page2of2FCCID:2BKBS-DUALPRO2 ShenzhenLCSComplianceTestingLaboratoryLtd. Add:101,201BldgA&301BldgC,JujiIndustrialParkYabianxueziwei,ShajingStreet,BaoanDistrict,Shenzhen, 518000,China Tel:+(86)0755-82591330|E-mail:[email protected]|Web:www.lcs-cert.com Scancodetocheckauthenticity Fig.3 TestSetupPhoto(s)ofConductedEmissionsMeasurement Fig.4