2BNKF-D603Wireless Lavalier Microphone

FCC Caution: 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.

CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BNKF-D603 D603，D603A，D603B，D603C，D603D，D600， D600A，D600B，D600C，D600D，D607，D607A， D607B，D607C，D607D We, Applicant CompanyName:DongguanDareFlyMoldTechnologyCo., LTD. Address:No.19,BinheStreet,Tianxin,Huangjiang Town,DongguanCity,GuangdongProvince Phone:13532992560 certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofistsuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-12-12 SignatureDate PrintedNameofSignee:MarvinNi Company:DongguanDareFlyMold TechnologyCo.,LTD. Phone:+8613532992560 Email:[email protected] Address:No.19,BinheStreet,Tianxin, HuangjiangTown,DongguanCity, GuangdongProvince Fax:N/A

DongguanDareFlyMoldTechnologyCo.,LTD. Add:No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity,GuangdongProvince Date:2025-12-12 FCCID:2BNKF-D603 ModelNumber:D603，D603A，D603B，D603C，D603D，D600，D600A，D600B，D600C，D600 D，D607，D607A，D607B，D607C，D607D To:FederalCommunicationCommission AuthorizationandEvaluationDivision7435OaklandMillsRoad Columbia,MD21048 ToWhomItMayConcern, We,DongguanDareFlyMoldTechnologyCo.,LTD.herebydeclarethatourproduct(Bluetooth helmetheadset）ModelNumber：D603，D603A，D603B，D603C，D603D，D600，D600A，D600B， D600C，D600D，D607，D607A，D607B，D607C，D607Dtheyareelectricalidentical,theSchematic, PCBlayout,structureandsoftwarearesame,onlythedifferenceisthemodelnameformarket purpose. Sincerely, (Signed) Name/Title:MarvinNi/Manager Company:DongguanDareFlyMoldTechnologyCo.,LTD. Address:No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity,GuangdongProvince Phone:+8613532992560 FaxNumber:N/A E-Mail:[email protected]

ConfidentialityRequestLetter ForCertificationServiceintheUSA FederalCommunicationCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoParagraphs§0.457and0.459oftheCommission’sRules(47C.F.R.)andSection §552(b)(4)oftheFreedomofInformationAct,werequestconfidentialityforthe documentationofthefollowingproducts: FCCIDModelname 2BNKF-D603 D603，D603A，D603B，D603C，D603D， D600，D600A，D600B，D600C，D600D， D607 ， D607A ， D607B ， D607C ， D607D Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare:  theOperationalDescription theBlockDiagram theSchematics Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2025-12-12 SignatureDate PrintedNameofSignee/Title:MarvinNi/Manager Company:DongguanDareFlyMoldTechnologyCo.,LTD. Address:No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity,GuangdongProvince Phone:+8613532992560 Fax:N/A Email:[email protected]

ReportNo.:CISRR25102821801 Page 55 of 58 9.EXTERNALANDINTERNALPHOTOS 9.1.ExternalPhotos ReportNo.:CISRR25102821801 Page 56 of 58

Label Size:10mm*4mm FCCID:2BNKF-D603 LabelLocation

ReportNo.:CISRR25102821801 Page 57 of 58 9.2.InternalPhotos ReportNo.:CISRR25102821801 Page 58 of 58 ------Endofthereport----- ANT

ReportNo.:CISRR25102821802 Reporttemplateversion:CISE-TR-001-A0Page:1of5 r TESTREPORT RFExposureEvaluation ReportNo.: CISRR25102821802 ProjectNo.: CISR251028218 FCCID:2BNKF-D603 Applicant:DongguanDareFlyMoldTechnologyCo.,LTD. Address: No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity, GuangdongProvince,China Manufacturer: DongguanDareFlyMoldTechnologyCo.,LTD. Address: No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity, GuangdongProvince,China ProductName: WirelessLavalierMicrophone TradeMark:- Model/Typereference:D603 ListedModel(s): D603A,D603B,D603C,D603D,D600,D600A,D600B,D600C,D600D,D607， D607A,D607B,D607C,D607D Standard:47CFRPart2.1093 Issuedate:November5,2025 Testresult:Complied Reviewedby:MorganTan Approvedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangceTesting TechnologyCo.,Ltd. ReportNo.:CISRR25102821802 Reporttemplateversion:CISE-TR-001-A0Page:2of5 1.APPLICABLESTANDARD 47CFRPart2.1093:Radiofrequencyradiationexposureevaluation:portabledevices ANSIC95.1–3999:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequency ElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRF ExposureProceduresandEquipmentAuthorizationPolicies. 47CFRPart1.1307:Actionsthatmayhaveasignificantenvironmentaleffect,forwhichEnvironmental Assessments(EAs)mustbeprepared. 2.REPORTVERSION VersionNo.IssuedateDescription 00November4,2025Original ReportNo.:CISRR25102821802 Reporttemplateversion:CISE-TR-001-A0Page:3of5 3.RADIOSPECIFICATIONDESCRIPTION Bluetooth Supportedtype:BREDRLE-1Mbps LE-2Mbps Note:PleaserefertoRFreportfordetailedtechnicalspecifications 4.SIMULTANEOUSTRANSMISSIONANALYSIS ThesedevicesuseasingletransmittermoduleandantennaforBT,BTcannottransmitsimultaneously. ReportNo.:CISRR25102821802 Reporttemplateversion:CISE-TR-001-A0Page:4of5 5.TESTRESULT 5.1.Standalonetransmission Limit: KDB447498D01v06,Clause4.3.1a) For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-g SARtestexclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation31The resultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. Result: Passed TestData Radiotype Frequency (GHz) Maximum output power #1 (dBm) Antenna gain #2 (dBi) Maximum EIRP #3 (dBm) Maximum tune-up EIRP #4 (dBm) Minimum distance (mm) Evaluated value LimitResult Bluetooth2.482.192.364.555.005.000.99603.00PASS Note #1:ThisvaluecomesfromtheRFtestreport. #2:Thisvalueisdeclaredbytheapplicant. #3:EIRP=Maximumoutputpower+Antennagain. #4:Thisvalueisdeclaredbytheapplicant. ReportNo.:CISRR25102821802 Reporttemplateversion:CISE-TR-001-A0Page:5of5 5.2.Simultaneoustransmission Limit: KDB447498D01v06,Clause4.3.2,47CFRPart1.1307 InthecaseofxedRFsourcesoperatinginthesametime-averagingperiod,orof multiplemobileorportableRFsourceswithinadeviceoperatinginthesametime averagingperiod,ifthesumofthefractionalcontributionstotheapplicablethresholds islessthanorequalto1asindicatedinthefollowingequation. Where a=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(B)ofthissectionforP,includingexistingexempttransmittersandthosebeing added. b=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(C)ofthissectionforThresholdERP,includingexistingexempttransmittersand thosebeingadded. c=numberofexistingfixed,mobile,orportableRFsourceswithknownevaluationforthespeci edminimumdistanceincludingexistingevaluatedtransmitters. P j =theavailablemaximumtime-averagedpowerortheERP,whicheverisgreater,forxed, mobile,orportableRFsourceiatadistancebetween0.5cmand40cm(inclusive). P th,j =theexemptionthresholdpower(P)accordingtoparagraph(b)(3)(i)(B)ofthissectionfor xed,mobile,orportableRFsourcei. ERP j =theERPoffixed,mobile,orportableRFsourcej. ERP th,j =exemptionthresholdERPforfixed,mobile,orportableRFsourcej,atadistanceofat leastλ/2πaccordingtotheapplicableformulaofparagraph(b)(3)(i)(C)ofthissection. Evaluated k =themaximumreportedSARorMPEoffixed,mobile,orportableRFsourcekeither inthedeviceoratthetransmittersitefromanexistingevaluationatthelocationofexposure. ExposureLimit k =eitherthegeneralpopulation/uncontrolledmaximumpermissibleexposure (MPE)orspecicabsorptionrate(SAR)limitforeachxed,mobile,orportableRFsourcek, asapplicablefrom§1.1310ofthischapter. Result:NotApplicable --------EndofReport--------

SMD
CERAMIC
ANTENNA
Data
Sheet CS -2450-21 -C For 2400-2483MH z 2.0x1.2mm [EIA2012] HZ2012WC02 Address:101, No. 1, Lane 2, Qiaolian West,MaanTangcommunity, manufacturer:Shenzhen Haizhe Technology Co., Ltd. BantianStreet,LonggangDistrict, Shenzhen. 典型特征 T y p i cal Characterist i cs ■ 重量轻，结构紧凑 Light weight, compact ■ 宽带大，低成本 Wide bandwidth, low cost ■ 高增益内置天线 Built-in antenna with high gain ■ 工作温度 Operating Temp. : -40°C~+85°C 电气特性 Electrical Characteristics per line(TA=25°C) 2400~2483 MHz Lin ear dB i 72. 5% % 50 频带 Frequency Band 极 化 P o l a riz a t i o n * 峰 值 增 益 P eak Ga in * 峰 值 效 率 P ea k Effi c i e n c y 阻 抗 Im p e n da n ce 参数Parameter 规格Specification 单位Units 特征 Feature 应用 Application ■ 蓝牙,无线局域网,移动电视 Bluetooth, Wireless LAN, Mobile TV ■ 家用射频系统Home RF system, etc *测 试 条 件 ： 测 试 板 尺 寸 9 8 × 65 mm ； 匹 配 电 路 ： π 型 匹 配 电 路 。 T est co n d i t i o n : T est boa r d s iz e 9 8 * 65 m m ; M a t c hin g c ir cu i t: P i m a t c hin g c ir cu i t w il l be re q u ir ed Fi g .1 驻 波 比 V S WR W Chip Antenna CS-2450-21-C 2.36 3D模式 3D Gain Pattern (2400 MHz) 增益模式是在 暗 室 进 行 测 试 的 ， 被 测 件 放 在 桌 肩 位 置 ， 用 标 准 的 喇 叭 天 线 和 矢 量 网 络 分 析 仪 来 收 集 数 据 。 Th e Ga i n p a tt e rn i s measu r ed i n FAR - fi e l d c h a m be r . D U T i s p l aced o n e tab l e o f r o t a t o r , a s t a n da r d ho r n a n t e nn a a n d Vec t o r N e t w o rk t o co ll ect da t a . 辐射模式 Radiation Pattern Fig.2 暗室示意图 FAR-field Chamber Chip Antenna t h An a l y z e r i s uesd 3D模式 3D Gain Pattern (2450 MHz) 3D模式 3D Gain Pattern (2500 MHz) Chip Antenna 1. 30±3 minutes at -40°C±5°C, 2. Convert to +105°C (5 minutes) 3. 30±3 minutes at +105°C±5°C, 4. Convert to -40°C (5 minutes) 5. Total 100 continuous cycles 项目Item 环境Condition 规格Specification 热冲击 Thermal shock No apparent damage Fulfill the electrical spec. after test. 抗湿性 Humidity resistance No apparent damage Fulfill the electrical spec. after test. 1. Humidity: 85% R.H. 2. Temperature: 85±5°C 3. Time: 1000 hours. The dipped surface of the terminal shall be at least 95% covered with solder after dipped in solder bath of 245±5°C for 3±1 seconds. No apparent damage 焊锡性 Solderability 耐焊接热性 Soldering heat resistance No apparent damage 1. Solder bath temperature : 260±5°C 2. Bathing time: 10±1 seconds 低温电阻 Low temperature resistance No apparent damage Fulfill the electrical spec. after test. 1. Temperature: -40°C±5°C 2. Time: 1000 hours. No apparent damage Fulfill the electrical spec. after test. 1. Temperature: 150°C±5°C 2. Time: 1000 hours. 耐高温性 High temperature resistance 推荐回流焊接曲线Recommended Reflow Solder curve (2) 储存环境 Storage Condition (a)仓库：温度应在0～30°C之间，湿度应小于60%湿度，产品应在交货之日起1年内使用。 At warehouse: The temperature should be within 0 ~ 30°C and humidity should be less than 60% RH.The product should be used within 1 year from the time of elivery. (b)在板：温度应在40～85°C之间，湿度应小于85%湿度。On board: The temperature should be within -40~85°C and humidity should be less than 85% RH. (3) 工作环境温度 Operating Temperature Range 工作温度范围：-40°C to +85°C。 Operating temperature range : -40°C to +85°C. Chip Antenna 推荐焊&Evaluation Board Chip Antenna (1) 电烙铁的使用 Soldering Gun Procedure 以下注意事项仅针对使用电 烙铁进行个别器件更换。 Note the follows, in cas e of using solder gun for replacement. (a) 使用小于30W的电烙铁 ，温度不高于350°C，焊接时间小于3 秒。 The tip temperature m ust be less than 350°C for the period within 3 seconds by using soldering g un under 30 W. (b) 烙铁不可直接接触器件本 体。 The soldering gun tip s hall not touch this product dir ectly. (2) 焊锡量 Soldering Volume 注意焊接过程中过多的焊锡 量会损害器件本体。 N ote that exces s of soldering vo lume will easily g et crack the bod y of this product . 产 品尺寸 Product D imension 1

ReportNo.:CISRR25102821801 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of51 TESTREPORT ReportNo.CISRR25102821801 ProjectNo.CISR251028218 FCCID2BNKF-D603 ApplicantDongguanDareFlyMoldTechnologyCo.,LTD. Address No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity, GuangdongProvince,China ManufacturerDongguanDareFlyMoldTechnologyCo.,LTD. Address No.19,BinheStreet,Tianxin,HuangjiangTown,DongguanCity, GuangdongProvince,China ProductNameWirelessLavalierMicrophone Trademark- Model/TypereferenceD603 ListedModel(s) D603A,D603B,D603C,D603D,D600,D600A,D600B,D600C,D600D,D607， D607A,D607B,D607C,D607D Standard 47CFRPart15.247 DateofsamplereceiptOctober31,2025 TestdateOctober31,2025toNovember4,2025 IssuedateNovember5,2025 TestresultComplied Reviewedby:MorganTan Approvedby:HansHu ReportNo.:CISRR25102821801 Page 2 of 51 Contents 1.STANDARDANDAPPLICABLETESTMETHODS........................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.TESTDESCRIPTION.......................................................................................................................................4 4.SUMMARY........................................................................................................................................................5 4.1.ProductDescription*..................................................................................................................................5 4.2.RadioSpecificationDescription*..............................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................6 4.4.Deviationfromstandards...........................................................................................................................6 4.5.TestingSite...................................................................................................................................................6 5.TESTCONFIGURATION.................................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Descriptionsoftestmode...........................................................................................................................7 5.3.Supportunitusedintestconfiguration....................................................................................................7 5.4.Testsampleinformation.............................................................................................................................7 5.5.Environmentalconditions...........................................................................................................................7 5.6.Statementofthemeasurementuncertainty.............................................................................................8 5.7.EquipmentUsedduringtheTest................................................................................................................9 6.TESTRESULTS.............................................................................................................................................11 6.1.EvaluationResults(Evaluation)...............................................................................................................11 6.1.1.AntennaRequirement.............................................................................................................................11 6.2.RadioSpectrumMatterTestResults(RF)...............................................................................................12 6.2.1.ConductedEmissionatACpowerline.................................................................................................12 6.2.2.MaximumConductedOutputPower.....................................................................................................15 6.2.3.ChannelSeparation................................................................................................................................16 6.2.4.NumberofHoppingFrequencies..........................................................................................................17 6.2.5.DwellTime...............................................................................................................................................18 6.2.6.Conductedbandedgeandspuriousemission...................................................................................20 6.2.7.Radiatedbandedgeemission...............................................................................................................22 6.2.8.RadiatedSpuriousEmission(below1GHz).........................................................................................28 6.2.9.RadiatedSpuriousEmission(Above1GHz)........................................................................................32 7.APPENDIXREPORT......................................................................................................................................40 7.1.ConductedOutputPower.........................................................................................................................40 7.2.20dBBandwidth.........................................................................................................................................42 7.3.CarrierFrequenciesSeparation...............................................................................................................43 7.4.ConductedOutOfBandEmission...............…

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ReportNo.:CISRR25102821801 Page 53 of 58 8.TESTSETUPPHOTOS ConductedEmissionatACpowerline RadiatedSpuriousEmission(below1GHz) Radiatedbandedgeemission RadiatedSpuriousEmission(Above1GHz) ReportNo.:CISRR25102821801 Page 54 of 58