W6R-EB-T52Bluetooth Earphones

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. 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC ID: W6R-EB-T52

Product Name : Bluetooth Earphones Model No. : RW-T52 FCC ID:W6R-EB-T52 The device have left and right earphones ,left and right earphones are electrically identical. <Signature> Name Dennis Auyang Title Manager Applicant Company : Rosewill Inc.

ModelNo.:RW-T52

ModelNo.:RW-T52

RFExposureEvaluationStatement ProductName: BluetoothEarphones ModelNo.：RW-T52 FCCID：W6R-EB-T52 1.1RFExposureComplianceRequirement 1.1.1StandardRequirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06 StandaloneSARtestexclusionconsiderations UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,bymeasurementor numericalsimulation,isnotrequiredwhenthecorrespondingSARExclusionThresholdcondition,listed below,issatisfied. 1.1.2Limits The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparationdistances ≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]· [√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation 17 Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmand fortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtestseparation distanceis<5mm,adistanceof5mmisappliedtodetermineSARtestexclusion 1.1.3EUTRFExposure OperationalMode:EDR（8-DPSKworstcase） Channel Maximum Peak Conducted Output Power (dBm) Tuneup tolerance (dB) Maximumtune-upPower Calculated value Exclusion threshold (dBm)(mW) 2402MHZ6.27 ±1 7.275.331.65 3.02441MHz6.17 ±1 7.175.211.63 2480MHz5.26 ±1 6.264.231.33

Page1of50 BlueAsiaTechnologyServices(Shenzhen)Limited Add:No.448,BulongRoad,BantianStreet,LonggangDistrict,Shenzhen,China Tel:+86-755-23059481Email:[email protected] 1CoverPage FCCReport(Bluetooth) ProductName:BluetoothEarphones Trademark:N/A ModelNo.:RW-T52 FCCID:W6R-EB-T52 ReportNumber:BLA-EMC-202008-A61-01 Dateofsamplereceipt:2020/8/14 DateofTest:2020/8/14-2020/8/25 DateofIssue:2020/9/1 Teststandard:FCCCFRTitle47Part15SubpartCSection 15.247 Testresult:PASS Preparedfor: RosewillInc. 2711CentervilleRoad,Suite400,CityofWilmington19808,United States Preparedby: BlueAsiaofTechnicalServices(Shenzhen)Co.,Ltd. IOTTestCentreofBlueAsia No.448BulongRoad,BantianStreet,LonggangDistrict,Shenzhen, China TEL:+86-755-28682673 FAX:+86-755-28682673 Compileby: Reviewby: Approvedby: Date:2020/9/1 ReportNo.:BLA-EMC-202008-A61-01 Page2of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] 2Version VersionNo.DateDescription 002020/9/1Original ReportNo.:BLA-EMC-202008-A61-01 Page3of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] 3Contents Page 1COVERPAGE................................................................................................................................................................1 2VERSION.........................................................................................................................................................................2 3CONTENTS.....................................................................................................................................................................3 4TESTSUMMARY...........................................................................................................................................................4 5GENERALINFORMATION..........................................................................................................................................5 5.1GENERALDESCRIPTIONOFEUT.............................................................................................................................5 5.2TESTMODE...............................................................................................................................................................7 5.3TESTFACILITY..........................................................................................................................................................7 5.4TESTLOCATION........................................................................................................................................................7 5.5OTHERINFORMATIONREQUESTEDBYTHECUSTOMER.........................................................................................7 5.6DESCRIPTIONOFSUPPORTUNITS..........................................................................................................................7 6TESTINSTRUMENTSLIST.........................................................................................................................................8 7TESTRESULTSANDMEASUREMENTDATA....................................................................................................10 7.1ANTENNAREQUIREMENT........................................................................................................................................10 7.2CONDUCTEDEMISSIONS........................................................................................................................................11 7.3CONDUCTEDPEAKOUTPUTPOWER.....................................................................................................................14 7.420DBEMISSIONBANDWIDTH.................................................................................................................................15 7.5CARRIERFREQUENCIESSEPARATION..................................................................................................................16 7.6HOPPINGCHANNELNUMBER.................................................................................................................................17 7.7DWELLTIME............................................................................................................................................................18 7.8PSEUDORANDOMFREQUENCYHOPPINGSEQUENCE..........................................................................................19 7.9BANDEDGE............................................................................................................................................................20 7.9.1ConductedEmissionMethod.....................................................................................................................20 7.9.2RadiatedEmissionMethod........................................................................................................................21 7.10SPURIOUSEMISSION............................................................................................................................................26 7.10.1ConductedEmissionMethod...................................................................................................................26 7.10.2RadiatedEmissionMethod......................................................................................................................27 8TESTSETUPPHOTO.................................................................................................................................................38 9EUTCONSTRUCTIONALDETAILS........................................................................................................................40 10APPENDIX.................................................................................................................................................................50 ReportNo.:BLA-EMC-202008-A61-01 Page4of50 BlueAsiaTechnologyServices(Shenzhen…

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ReportNo.:BLA-EMC-202008-A61-01 Page38of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] 8TestSetupPhoto RadiatedEmission ReportNo.:BLA-EMC-202008-A61-01 Page39of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ConductedEmission ReportNo.:BLA-EMC-202008-A61-01 Page40of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] 9EUTConstructionalDetails ReportNo.:BLA-EMC-202008-A61-01 Page41of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page42of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page43of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page44of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page45of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page46of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page47of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page48of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page49of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] ReportNo.:BLA-EMC-202008-A61-01 Page50of50 BlueAsiaTechnologyServices(Shenzhen)LimitedTel:+86-755-23059481Email:[email protected] 10 Appendix Refertothefollowingattachments. ***EndofReport*** Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,The result(s)showninthisreportreferonlytothesample(s)tested.Withoutwritten approvalofBlueAsia,thisreportcan’tbereproducedexceptinfull.

AppendixA:20dBEmissionBandwidth TestResult TestModeAntennaChannel 20db EBW[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict DH1Ant1 24021.1042401.4512402.555---PASS 24411.1042440.4512441.555---PASS 24801.1012479.4512480.552---PASS 2DH1Ant1 24021.3922401.2982402.690---PASS 24411.3952440.2982441.693---PASS 24801.3952479.2982480.693---PASS 3DH1Ant1 24021.3712401.3042402.675---PASS 24411.3772440.2982441.675---PASS 24801.3652479.3102480.675---PASS TestGraphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 AppendixC:Maximumconductedoutputpower TestResult TestModeAntennaChannelResult[dBm]Limit[dBm]Verdict DH1Ant1 24022.29<=21PASS 24412.91<=21PASS 24802.12<=21PASS 2DH1Ant1 24025.5<=21PASS 24415.34<=21PASS 24804.64<=21PASS 3DH1Ant1 24026.27<=21PASS 24416.17<=21PASS 24805.26<=21PASS TestGraphs DH1_Ant1_2402 DH1_Ant1_2441 DH1_Ant1_2480 2DH1_Ant1_2402 2DH1_Ant1_2441 2DH1_Ant1_2480 3DH1_Ant1_2402 3DH1_Ant1_2441 3DH1_Ant1_2480 AppendixD:Carrierfrequencyseparation TestResult TestModeAntennaChannelResult[MHz]Limit[MHz]Verdict DH1Ant1Hop1.158>=1.104PASS 2DH1Ant1Hop0.998>=0.930PASS 3DH1Ant1Hop1.142>=0.918PASS TestGraphs DH1_Ant1_Hop 2DH1_Ant1_Hop 3DH1_Ant1_Hop AppendixE:Timeofoccupancy TestResult TestModeAntennaChannel BurstWidth [ms] TotalHops [Num] Result[s]Limit[s]Verdict DH1Ant1Hop0.383300.126<=0.4PASS DH3Ant1Hop1.641700.279<=0.4PASS DH5Ant1Hop2.891100.318<=0.4PASS TestGraphs DH1_Ant1_Hop DH3_Ant1_Hop DH5_Ant1_Hop AppendixF:Numberofhoppingchannels TestResult TestModeAntennaChannelResult[Num]Limit[Num]Verdict DH1Ant1Hop79>=15PASS 2DH1Ant1Hop79>=15PASS 3DH1Ant1Hop79>=15PASS TestGraphs DH1_Ant1_Hop 2DH1_Ant1_Hop 3DH1_Ant1_Hop

AppendixG:Bandedgemeasurements TestResult TestModeAntennaChNameChannel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH1Ant1 Low24022.90-56.12<=-17.1PASS High24801.93-54.89<=-18.07PASS LowHop_24022.01-55.63-18PASS HighHop_24801.92-55.01-18.08PASS 2DH1Ant1 Low24022.60-56.09<=-17.4PASS High24801.99-55.72<=-18.02PASS LowHop_24022.18-56.23-17.82PASS HighHop_24802.10-54.98-17.9PASS 3DH1Ant1 Low24022.81-55.47<=-17.19PASS High24802.05-55.14<=-17.95PASS LowHop_24021.94-55.68-18.06PASS HighHop_24802.04-55.08-17.96PASS TestGraphs DH1_Ant1_Low_2402 DH1_Ant1_High_2480 DH1_Ant1_Low_Hop_2402 DH1_Ant1_High_Hop_2480 2DH1_Ant1_Low_2402 2DH1_Ant1_High_2480 2DH1_Ant1_Low_Hop_2402 2DH1_Ant1_High_Hop_2480 3DH1_Ant1_Low_2402 3DH1_Ant1_High_2480 3DH1_Ant1_Low_Hop_2402 3DH1_Ant1_High_Hop_2480 AppendixH:ConductedSpuriousEmission TestResult TestModeAntennaChannel FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH1Ant1 2402 Reference2.822.82---PASS 30~100030~1000-55.666<=-17.179PASS 1000~265001000~26500-43.526<=-17.179PASS 2441 Reference2.692.69---PASS 30~100030~1000-56.162<=-17.31PASS 1000~265001000~26500-38.636<=-17.31PASS 2480 Reference1.911.91---PASS 30~100030~1000-56.175<=-18.094PASS 1000~265001000~26500-36.979<=-18.094PASS 2DH1Ant1 2402 Reference2.572.57---PASS 30~100030~1000-55.497<=-17.432PASS 1000~265001000~26500-39.463<=-17.432PASS 2441 Reference2.582.58---PASS 30~100030~1000-56.049<=-17.416PASS 1000~265001000~26500-39.803<=-17.416PASS 2480 Reference1.991.99---PASS 30~100030~1000-56.128<=-18.007PASS 1000~265001000~26500-37.901<=-18.007PASS 3DH1Ant1 2402 Reference2.742.74---PASS 30~100030~1000-56.096<=-17.263PASS 1000~265001000~26500-38.529<=-17.263PASS 2441 Reference2.642.64---PASS 30~100030~1000-54.992<=-17.361PASS 1000~265001000~26500-44.377<=-17.361PASS 2480 Reference2.072.07---PASS 30~100030~1000-55.572<=-17.935PASS 1000~265001000~26500-38.596<=-17.935PASS TestGraphs DH1_Ant1_2402_0~Reference DH1_Ant1_2402_30~1000 DH1_Ant1_2402_1000~26500 DH1_Ant1_2441_0~Reference DH1_Ant1_2441_30~1000 DH1_Ant1_2441_1000~26500 DH1_Ant1_2480_0~Reference DH1_Ant1_2480_30~1000 DH1_Ant1_2480_1000~26500 2DH1_Ant1_2402_0~Reference 2DH1_Ant1_2402_30~1000 2DH1_Ant1_2402_1000~26500 2DH1_Ant1_2441_0~Reference 2DH1_Ant1_2441_30~1000 2DH1_Ant1_2441_1000~26500 2DH1_Ant1_2480_0~Reference 2DH1_Ant1_2480_30~1000 2DH1_Ant1_2480_1000~26500 3DH1_Ant1_2402_0~Reference 3DH1_Ant1_2402_30~1000 3DH1_Ant1_2402_1000~26500 3DH1_Ant1_2441_0~Reference 3DH1_Ant1_2441_30~1000 3DH1_Ant1_2441_1000~26500 3DH1_Ant1_2480_0~Reference 3DH1_Ant1_2480_30~1000 3DH1_Ant1_2480_1000~26500

ModelNo.:RW-T52