2BRZO-MLF-W7Head-mounted Bluetooth headset

Dongguan MLF Tech. Co., Ltd

Application Details

Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Date of Grant: Sep 30, 2025
Application Purpose: Original Equipment
Equipment Note: Head-mounted Bluetooth headset
Frequency Range: 2402.00000000 - 2480.00000000
Company: Dongguan MLF Tech. Co., Ltd
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.

Attestation Statements

DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Sep.27,25 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2BRZO-MLF-W7 ProductName:Head-mountedBluetoothheadset Thisletterservesasanattestationthattheequipmentidentifiedabove☐is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:WenLeChen Title:Manager Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'SREPUBLIC OFCHINA. Tel.:+86-0769-87989645 Email:[email protected] DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck SBOM(SoftwareBillofMaterials)[ForDeviceisnotInherentcompliance] SectionComponentNameVersionSupplier 1 2 3

Attestation Statements

DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Sep.30,25 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2BRZO-MLF-W7 DongguanMLFTech.Co.,Ltd.(“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002of referencechapter,asanentityproducing“covered”communicationequipment.Theequipmentfor whichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:WenLeChen Title:Manager Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. Tel.:+86-0769-87989645 Email:[email protected]

Attestation Statements

DongguanMLF Tech. Co., Ltd No.8, QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity, PEOPLE'S REPUBLICOF CHINA. U.S. AgentLetterof Attestation To: FederalCommunicationsCommission 7435 OaklandMills Road,Columbia,MD 21046,USA Dat e: Sep. 30, 25 Ref: AttestationStatement– Part 2.911(d)(7)filing FCC ID: 2BRZO-MLF-W7 [DongguanMLF Tech. Co., Ltd] (“the applicant”) certifiesthat, as of the date of the filing of the application,[WilsonTech ServiceLLC ] (“the agent ”) is our designatedU.S. agent for serviceof processfor the abovereferenceFCC ID . The applicantacceptsto maintainan agent for serviceof processin the UnitedStatesfor no less than one year after either the granteehas permanently terminatedall marketingand importationof the applicableequipmentwithin the U.S., or the conclusionof any Commission-relatedadministrativeor judicialproceedinginvolvingthe equipment, whicheveris later. The applicantfurtheracknowledgesit is our responsibilityto informthe FCC wheneverthe agent informationchanges. [WilsonTech ServiceLLC] ("th e agent)understandit is the agent'sobligationto acceptserviceof processin the UnitedStatesfor mattersrelatedto the applicableequipment,and at the physicalU.S. addressand email address. DesignatedU.S. Agent CompanyName:WilsonTech ServiceLLC FRN : 0033402033 GC: Address:1312 17th StreetSuite 692, Denver,CO, 80202,US Signature: ContactPerson:WilsonCheung Tel: +1-716-965-5112Email: [email protected] Applicant CompanyName:DongguanMLF Tech. Co., Ltd Addr ess: No.8, QingpingRoad,QinghutouVillage, TangxiaTown,523726DongguanCity, PEOPLE'S REPUBLICOF CHINA. Signature: ContactPerson:WenLeChen Tel: +86-0769-87989645Email:[email protected] FRN: 0037462884

Cover Letter(s)

DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. Sep.27,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2BRZO-MLF-W7 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow:  BlockDiagram Schematics  OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired. UserManual  InternalPhotos ExternalPhotos  TestSetupPhotos Sincerely, (Signature) PrintedName:WenLeChen Title:Manager Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. Tel.:+86-0769-87989645 Email:[email protected]

Cover Letter(s)

DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. Sep.27,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BRZO-MLF-W7 I,theundersigned,herebyauthorizeKeywayTestingTechnology(Guangdong)Co.,Ltd.toactonour behalfinallmattersrelatingtothisapplicationforequipmentcertification. AnyactcarriedoutbyKeywayTestingTechnology(Guangdong)Co.,Ltd.shallhavethesameeffectas ourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswithDongguan MLFTech.Co.,Ltd WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) PrintedName:WenLeChen Title:Manager Tel.:+86-0769-87989645 Email:[email protected]

RF Exposure Info

FCCID:2BRZO-MLF-W7 RFExposureEvaluation 1.1.ApplicableStandard Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbe operatedinamannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergy levelinexcessoftheCommission’sguidelines. Accordingto§1.1310and§2.1093RFexposureiscalculated. KDB447498v06:MobileandPortableDevicesRFExposureProceduresandEquipment AuthorizationPolicies. 1.2.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1 StandaloneSARtestexclusionconsiderations:“Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremity SARevaluationforgeneralpopulationexposureconditions,bymeasurementornumerical simulation,isnotrequiredwhenthecorrespondingSARTestExclusionThreshold condition,listedbelow,issatisfied.Thesetestexclusionconditionsarebasedon source-basedtime-averagedmaximumconductedoutputpoweroftheRFchannel requiringevaluation,adjustedfortune-uptolerance,andtheminimumtestseparation distancerequiredfortheexposureconditions.22Theminimumtestseparationdistanceis determinedbythesmallestdistancefromtheantennaandradiatingstructuresorouter surfaceofthedevice,accordingtothehostformfactor,exposureconditionsandplatform requirements,toanypartofthebodyorextremityofauserorbystander(see5)ofsection 4.1).ToqualifyforSARtestexclusion,thetestseparationdistancesappliedmustbefully explainedandjustifiedbytheoperatingconfigurationsandexposureconditionsofthe transmitterandapplicablehostplatformrequirements,typicallyintheSARmeasurementor SARanalysisreport,accordingtotherequiredpublishedRFexposureKDBprocedures. WhennootherRFexposuretestingorreportingisrequired,astatementofjustificationand compliancemustbeincludedintheequipmentapproval,inlieuoftheSARreport,toqualify fortheSARtestexclusion.Whenrequired,thedevicespecificconditionsdescribedinthe otherpublishedRFexposureKDBproceduresmustbesatisfiedbeforeapplyingtheseSAR testexclusionprovisions;forexample,handheldPTTtwo-wayradios,handsets,laptops& tabletsetc.23“[(max.powerofchannel,includingtune-uptolerance,mW)/(min.test separationdistance,mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR, where: •f(GHz)istheRFchanneltransmitfrequencyinGHz •PoweranddistanceareroundedtothenearestmWandmmbeforecalculation •Theresultisroundedtoonedecimalplaceforcomparison •3.0and7.5arereferredtoasthenumericthresholdsinthestep2belowThetest exclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mmand fortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto5)insection4.1isapplied todetermineSARtestexclusion. 1.3.Manufacturingtolerance 1.4.EvaluationResult Band/Mode f (GHz) Antenna Distance (mm) RFoutputpower (including tune-up tolerance) SARTest Exclusion Threshold SARTest Exclusion dBmmW BT(EDR)2.44057.05.0121.57<3.0Yes Note:Result=P F /D P=Maximumturn-uppowerinmW F=ChannelfrequencyinGHz D=Mininmuntestseparationdistanceinmm 1.5.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093forthe uncontrolledRFExposureandSARExclusionThresholdperKDB447498v06,NoSARis required. EDR ChannelChannel00Channel39Channel78 GFSKTarget(dBm)5.05.05.0 Tolerance±(dB)1.01.01.0 π/4DQPSKTarget(dBm)5.06.05.0 Tolerance±(dB)1.01.01.0 8DPSKTarget(dBm)5.06.05.0 Tolerance±(dB)1.01.01.0

Test Report

FCCID:2BRZO-MLF-W7ReportNo.2025092769192835-00 KeywayTestingTechnology(Guangdong)Co.,Ltd. Telephone:+86(769)87182258 Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of Tangxia www.keywaytest.com District,DongshenRoad,TangxiaTown,DongguanCity,Guangdongprovince,China Page1of37 FCCIDTESTREPORT Preparedfor:DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown, 523726DongguanCity,PEOPLE'SREPUBLICOFCHINA. TradeName: E.U.T:Head-mountedBluetoothheadset ModelNumber:MLF-W7 Preparedby:KeywayTestingTechnology(Guangdong)Co.,Ltd. Address:Room2102,Building6,DongyiIntelligentEquipmentNew EnergyVehiclePark,No.30ofTangxiaDistrict,Dongshen Road,TangxiaTown,DongguanCity,Guangdongprovince, China Tel:86-769-87182258 Fax:86-769-87181058 ReportNo.:2025092769192835-00 DateofTest::Aug.19~Sep.03,2025 DateofReport:Sep.03,2025 FCCID:2BRZO-MLF-W7ReportNo.2025092769192835-00 KeywayTestingTechnology(Guangdong)Co.,Ltd. Telephone:+86(769)87182258 Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of www.keywaytest.com TangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdongprovince,China Page2of37 Applicant:DongguanMLFTech.Co.,Ltd Address: No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726 DongguanCity,PEOPLE'SREPUBLICOFCHINA. Manufacturer:DongguanMLFTech.Co.,Ltd Address: No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726 DongguanCity,PEOPLE'SREPUBLICOFCHINA. E.U.T:Head-mountedBluetoothheadset ModelNumber:MLF-W7 TradeName: DateofReceipt:Aug.19,2025 DateofTest:Aug.19~Sep.03,2025 TestSpecification:FCCCFR47Part15Section15.247 TestResult: Theequipmentundertestwasfoundtobecompliancewiththe requirementsofthestandardsapplied. IssueDate:Sep.03,2025 Testedby:Reviewedby:Authorizedby: HughZhang/EngineerBillyZeng/SupervisorCherryChen/Manager Abbreviations:OK/P=passedfail/F=failedN/A=notapplicableE.U.T=equipmentundertested ThisdevicedescribedabovehasbeentestedbyKeyway,andthetestresultsshowthattheequipmentundertest(EUT)isin compliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofKeyway,thisdocumentmaybealteredorrevised byKeyway,personalonly,andshallbenotedintherevisionofthedocument. FCCID:2BRZO-MLF-W7ReportNo.2025092769192835-00 KeywayTestingTechnology(Guangdong)Co.,Ltd. Telephone:+86(769)87182258 Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of www.keywaytest.com TangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdongprovince,China Page3of37 RevisionRecord VersionChapterDateModifierRemark 00 Sep.03,2025Original FCCID:2BRZO-MLF-W7ReportNo.2025092769192835-00 KeywayTestingTechnology(Guangdong)Co.,Ltd. Telephone:+86(769)87182258 Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of www.keywaytest.com TangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdongprovince,China Page4of37 TABLEOFCONTENTS Page 1TESTSUMMARY..........................................................................................................................................................6 2GENERALPRODUCTINFORMATION...................................................................................................................7 2.1DESCRIPTIONOFDEVICE(EUT)..........................................................................................................................7 2.2CHANNELLIST.....................................................................................................................................................8 2.3TESTSETUPCONFIGURATION..............................................................................................................................9 2.4TESTMODE..........................................................................................................................................................9 3TESTSITES..................................................................................................................................................................10 3.1TESTFACILITIES.................................................................................................................................................10 3.2MEASUREMENTUNCERTAINTY..........................................................................................................................10 3.3LISTOFTESTANDMEASUREMENTINSTRUMENTS............................................................................................11 3.4DESCRIPTIONOFSUPPORTUNITS.......................................................................................................................13 4CONDUCTEDEMISSION..........................................................................................................................................14 4.1E.U.T.OPERATION.............................................................................................................................................14 4.2EUTSETUP........................................................................................................................................................14 4.3TESTSET-UP(BLOCKDIAGRAMOFCONFIGURATION)....................................................................................15 4.4MEASUREMENTPROCEDURE:.............................................................................................................................15 4.5CONDUCTEDEMISSIONLIMIT............................................................................................................................15 4.6MEASUREMENTDESCRIPTION............................................................................................................................15 4.7CONDUCTEDEMISSIONTESTRESULT................................................................................................................15 5RADIATEDSPURIOUSEMISSIONS........................................................................................…

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Test Report

2.4G-2.48G 频段板载PIFA天线测试报告 2.4G-2.48G Antenna Specification SPECIFICATIONS ITEMANT SPEC Model Name2.4G onboardANT MAX.Gain 3.43dBi PolarizationHorizontal and Vertical Azimuth Beam pattern Omni-directional Impedance50 Ohm Antenna Length 13.8mm Manufacture Shenzhen Junyue Internet Technology Co., Ltd Antenna Photo & Length (mm) StandardBandChanBWFreqTypeMAXTRP/TISGainLoss BTBLUETOOTH012402Trp9.444.560 BTBLUETOOTH3912441Trp7.313.430 BTBLUETOOTH7812480Trp3.610.420 BTBLUETOOTH012402Tis_Rssi-94-89.130 BTBLUETOOTH3912441Tis_Rssi-95.01-91.120 BTBLUETOOTH7812480Tis_Rssi-92.5-89.310 Theta0 PolarH StandardBandChannelFreqTypeEIRP/ETIS0EIRP/ETIS90EIRP/ETIS180EIRP/ETIS270 BTBLUETOOTH02402Trp-7.454456375-7.454456375-7.454456375-7.454456375 BTBLUETOOTH392441Trp-2.463550625-2.463550625-2.463550625-2.463550625 BTBLUETOOTH782480Trp-4.597206125-4.597206125-4.597206125-4.597206125 BTBLUETOOTH02402Tis_Rssi-77.11352525-77.11352525-77.11352525-77.11352525 BTBLUETOOTH392441Tis_Rssi-85.23346338-85.23346338-85.23346338-85.23346338 BTBLUETOOTH782480Tis_Rssi-84.29247665-84.29247665-84.29247665-84.29247665 PolarV StandardBandChanFreqTypeEIRP/EIS0EIRP/EIS90EIRP/EIS180EIRP/EIS270 BTBLUETOOTH02402Trp-7.465205875-7.465205875-7.465205875-7.4652058750 BTBLUETOOTH392441Trp-2.276443625-2.276443625-2.276443625-2.2764436250 BTBLUETOOTH782480Trp-4.487739625-4.487739625-4.487739625-4.4877396250 BTBLUETOOTH02402Tis_Rssi-77.10277575-77.10277575-77.10277575-77.102775750 BTBLUETOOTH392441Tis_Rssi-85.42057038-85.42057038-85.42057038-85.420570380 BTBLUETOOTH782480Tis_Rssi-84.40194315-84.40194315-84.40194315-84.401943150 Theta90 PolarH StandardBandChannelFreqTypeEIRP/ETIS0EIRP/ETIS90EIRP/ETIS180EIRP/ETIS270 BTBLUETOOTH02402Trp1.031414125-7.0518035-1.91974256.432018375 BTBLUETOOTH392441Trp0.710895538-3.963909125-2.935284.302986 BTBLUETOOTH782480Trp-1.766944875-6.74528875-5.059486250.610317225 BTBLUETOOTH02402Tis_Rssi-85.59939575-77.51617813-82.64823913-91 BTBLUETOOTH392441Tis_Rssi-88.40790954-83.73310488-84.761734-92 BTBLUETOOTH782480Tis_Rssi-87.1227379-82.14439403-83.83019653-89.5 PolarV StandardBandChanFreqTypeEIRP/EIS0EIRP/EIS90EIRP/EIS180EIRP/EIS270 BTBLUETOOTH02402Trp1.140247125-10.171506250.3579597256.421386750 BTBLUETOOTH392441Trp0.65561295-14.30946125-1.3498533754.2944641250 BTBLUETOOTH782480Trp-1.83977125-9.430233-4.1213073750.5878639130 BTBLUETOOTH02402Tis_Rssi-85.70822875-74.39647538-84.92594135-90.989368380 BTBLUETOOTH392441Tis_Rssi-88.35262695-73.38755275-86.34716063-91.991478130 BTBLUETOOTH782480Tis_Rssi-87.04991153-79.45944978-84.7683754-89.477546690 Theta180 PolarH StandardBandChannelFreqTypeEIRP/ETIS0EIRP/ETIS90EIRP/ETIS180EIRP/ETIS270 BTBLUETOOTH02402Trp2.3315432.3315432.3315432.331543 BTBLUETOOTH392441Trp1.23265851.23265851.23265851.2326585 BTBLUETOOTH782480Trp-1.96757525-1.96757525-1.96757525-1.96757525 BTBLUETOOTH02402Tis_Rssi-86.89952463-86.89952463-86.89952463-86.89952463 BTBLUETOOTH392441Tis_Rssi-88.9296725-88.9296725-88.9296725-88.9296725 BTBLUETOOTH782480Tis_Rssi-86.92210753-86.92210753-86.92210753-86.92210753 PolarV StandardBandChanFreqTypeEIRP/EIS0EIRP/EIS90EIRP/EIS180EIRP/EIS270 BTBLUETOOTH02402Trp2.30472952.30472952.30472952.30472950 BTBLUETOOTH392441Trp1.205581751.205581751.205581751.205581750 BTBLUETOOTH782480Trp-2.01602175-2.01602175-2.01602175-2.016021750 BTBLUETOOTH02402Tis_Rssi-86.87271113-86.87271113-86.87271113-86.872711130 BTBLUETOOTH392441Tis_Rssi-88.90259575-88.90259575-88.90259575-88.902595750 BTBLUETOOTH782480Tis_Rssi-86.87366103-86.87366103-86.87366103-86.873661030 Theta0 PolarH StandardBandChannelFreqTypeEIRP/ETIS0EIRP/ETIS90EIRP/ETIS180EIRP/ETIS270 BTBLUETOOTH02402Trp-7.454456375-7.454456375-7.454456375-7.454456375 BTBLUETOOTH392441Trp-2.463550625-2.463550625-2.463550625-2.463550625 BTBLUETOOTH782480Trp-4.597206125-4.597206125-4.597206125-4.597206125 BTBLUETOOTH02402Tis_Rssi-7.454456375-7.454456375-7.454456375-7.454456375 BTBLUETOOTH392441Tis_Rssi-2.463550625-2.463550625-2.463550625-2.463550625 BTBLUETOOTH782480Tis_Rssi-4.597206125-4.597206125-4.597206125-4.597206125 PolarV StandardBandChanFreqTypeEIRP/EIS0EIRP/EIS90EIRP/EIS180EIRP/EIS270 BTBLUETOOTH02402Trp-7.465205875-7.465205875-7.465205875-7.4652058750 BTBLUETOOTH392441Trp-2.276443625-2.276443625-2.276443625-2.2764436250 BTBLUETOOTH782480Trp-4.487739625-4.487739625-4.487739625-4.4877396250 BTBLUETOOTH02402Tis_Rssi-7.465205875-7.465205875-7.465205875-7.4652058750 BTBLUETOOTH392441Tis_Rssi-2.276443625-2.276443625-2.276443625-2.2764436250 BTBLUETOOTH782480Tis_Rssi-4.487739625-4.487739625-4.487739625-4.4877396250 Theta90 PolarH StandardBandChannelFreqTypeEIRP/ETIS0EIRP/ETIS90EIRP/ETIS180EIRP/ETIS270 BTBLUETOOTH02402Trp1.031414125-7.0518035-1.91974256.432018375 BTBLUETOOTH392441Trp0.710895538-3.963909125-2.935284.302986 BTBLUETOOTH782480Trp-1.766944875-6.74528875-5.059486250.610317225 BTBLUETOOTH02402Tis_Rssi1.031414125-7.0518035-1.91974256.432018375 BTBLUETOOTH392441Tis_Rssi0.710895538-3.963909125-2.935284.302986 BTBLUETOOTH782480Tis_Rssi-1.766944875-6.74528875-5.059486250.610317225 PolarV StandardBandChanFreqTypeEIRP/EIS0EIRP/EIS90EIRP/EIS180EIRP/EIS270 BTBLUETOOTH02402Trp1.140247125-10.171506250.3579597256.421386750 BTBLUETOOTH392441Trp0.65561295-14.30946125-1.3498533754.2944641250 BTBLUETOOTH782480Trp-1.83977125-9.430233-4.1213073750.5878639130 BTBLUETOOTH02402Tis_Rssi1.140247125-10.171506250.3579597256.421386750 BTBLUETOOTH392441Tis_Rssi0.65561295-14.30946125-1.3498533754.2944641250 BTBLUETOOTH782480Tis_Rssi-1.83977125-9.430233-4.1213073750.5878639130 Theta180 PolarH StandardBandChannelFreqTypeEIRP/ETIS0EIRP/ETIS90EIRP/ETIS180EIRP/ETIS270 BTBLUETOOTH02402Trp2.3315432.3315432.3315432.331543 BTBLUETOOTH392441Trp1.23265851.23265851.23265851.2326585 BTBLUETOOTH782480Trp-1.96757525-1.96757525-1.96757525-1.96757525 BTBLUETOOTH02402Tis_Rssi2.3315432.3315432.3315432.331543 BTBLUETOOTH392441Tis_Rssi1.23265851.23265851.23265851.2326585 BTBLUETOOTH782480Tis_Rssi-1.96757525-1.96757525-1.96757525-1.96757525 PolarV StandardBandChanFreqTypeEIRP/EIS0EIRP…

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Test Report

KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com E.U.T: Head-mountedBluetoothheadset ModelNumber:MLF-W7 TradeName:N/A DateofReceipt:Aug.19,2025 DateofTest:Aug19~Sep03,2025 FCCID:2BRZO-MLF-W7 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.1DUTYCYCLE TestResult ModulationPacketsChannel OnTime (ms) Period (ms) DutyCycle (%) DutyCycle (linear) DutyCycle Factor(dB) 1/T GFSKDH1 00.3821.24930.550.30555.14992.6178 390.3821.25030.530.30535.15272.6178 780.3821.25030.530.30535.15272.6178 π/4DQPSK2-DH1 00.3911.25031.300.31305.04462.5575 390.3911.24931.320.31325.04182.5575 780.3921.24931.360.31365.03622.5510 8DPSK3-DH1 00.3921.24931.360.31365.03622.5510 390.3921.25031.350.31355.03762.5510 780.3921.25031.350.31355.03762.5510 TestGraphs GFSK(DH1)_Channel0GFSK(DH1)_Channel39 GFSK(DH1)_Channel78π/4DQPSK(2-DH1)_Channel0 π/4DQPSK(2-DH1)_Channel39π/4DQPSK(2-DH1)_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com 8DPSK(3-DH1)_Channel08DPSK(3-DH1)_Channel39 8DPSK(3-DH1)_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.2DWELLTIME TestResult ModulationPacketChannel PulseWidth (ms) Numberof Pulsesin 31.6 seconds DwellTime (ms) Limit(ms)Result GFSK DH5 Hopping 2.89693269.33 <400 PASS DH52.896117338.83PASS DH52.880117336.96PASS π/4DQPSK 2-DH52.880105302.4PASS 2-DH52.896107309.87PASS 2-DH52.896103298.29PASS 8DPSK 3-DH52.896106306.98PASS 3-DH52.896107309.87PASS 3-DH52.89697280.91PASS TestGraphs PulseWidth GFSK_DH5 NumberofPulsesin31.6seconds GFSK_DH5 PulseWidth GFSK_DH5 NumberofPulsesin31.6seconds GFSK_DH5 PulseWidth GFSK_DH5 NumberofPulsesin31.6seconds GFSK_DH5 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com PulseWidth π/4DQPSK_2-DH5 NumberofPulsesin31.6seconds π/4DQPSK_2-DH5 PulseWidth π/4DQPSK_2-DH5 NumberofPulsesin31.6seconds π/4DQPSK_2-DH5 PulseWidth π/4DQPSK_2-DH5 NumberofPulsesin31.6seconds π/4DQPSK_2-DH5 PulseWidth 8DPSK_3-DH5 NumberofPulsesin31.6seconds 8DPSK_3-DH5 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com PulseWidth 8DPSK_3-DH5 NumberofPulsesin31.6seconds 8DPSK_3-DH5 PulseWidth 8DPSK_3-DH5 NumberofPulsesin31.6seconds 8DPSK_3-DH5

Test Report

KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.3NUMBEROFHOPPINGCHANNEL TestResult ModulationPacket NumberofHopping Channel LimitResult GFSKDH17915PASS π/4DQPSK2-DH17915PASS 8DPSK3-DH17915PASS TestGraphs LowEndSpectrumChannelHoppingPlot GFSK HighEndSpectrumChannelHoppingPlot GFSK LowEndSpectrumChannelHoppingPlot π/4DQPSK HighEndSpectrumChannelHoppingPlot π/4DQPSK LowEndSpectrumChannelHoppingPlot 8DPSK HighEndSpectrumChannelHoppingPlot 8DPSK KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.4CONDUCTEDPEAKOUTPUTPOWER TestResult ModulationPacketTypeChannel PeakOutput Power (dBm) PeakOutput Power (mW) Max.Avg. Power (dBm) Limit (dBm) Result GFSKDH1 04.893.08None ≤30 PASS 395.353.43NonePASS 784.752.99NonePASS π/4DQPSK2-DH1 05.223.33None ≤20.97 PASS 395.643.66NonePASS 784.833.04NonePASS 8DPSK3-DH1 05.263.36NonePASS 395.783.78NonePASS 785.143.27NonePASS TestGraphs PeakOutputPower GFSK_Channel0 PeakOutputPower GFSK_Channel39 PeakOutputPower GFSK_Channel78 PeakOutputPower π/4DQPSK_Channel0 PeakOutputPower π/4DQPSK_Channel39 PeakOutputPower π/4DQPSK_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com PeakOutputPower 8DPSK_Channel0 PeakOutputPower 8DPSK_Channel39 PeakOutputPower 8DPSK_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.599%BANDWIDTH TestResult ModulationChannelCenterFrequency(MHz)99%BW(MHz) GFSK 024020.82287 3924410.81663 7824800.81087 π/4DQPSK 024021.1847 3924411.1789 7824801.1936 8DPSK 024021.1648 3924411.1703 7824801.1753 TestGraphs GFSK_DH1_Channel0π/4DQPSK_2-DH1_Channel0 GFSK_DH1_Channel39π/4DQPSK_2-DH1_Channel39 GFSK_DH1_Channel78π/4DQPSK_2-DH1_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com 8DPSK_3-DH1_Channel08DPSK_3-DH1_Channel39 8DPSK_3-DH1_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.620DBBANDWIDTH TestResult ModulationChannelCenterFrequency(MHz)20dBBandwidth(MHz) GFSK 02402MHz0.8700 392441MHz0.8700 782480MHz0.8800 π/4DQPSK 02402MHz1.230 392441MHz1.270 782480MHz1.270 8DPSK 02402MHz1.220 392441MHz1.220 782480MHz1.230 TestGraphs GFSK_DH1_Channel0GFSK_DH1_Channel39 GFSK_DH1_Channel78π/4DQPSK_2-DH1_Channel0 π/4DQPSK_2-DH1_Channel39π/4DQPSK_2-DH1_Channel78

Test Report

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Contact Information

Applicant

WenLe Chen

[email protected]Fax: +86076987989645

Test Firm

Keyway Testing Technology (Guangdong) Co., LtdCherry Chen

[email protected]

Technical Specifications

#	Rule Parts	Frequency Range	Power Output
1	15C	2.40 GHz - 2.48 GHz	3.78 mW

Confidentiality

Long Term

Grant Notes

Output power listed is conducted power.

Other Applications from Dongguan MLF Tech. Co., Ltd

2BRZO-MLF-A7

TWS Bluetooth Headphones

Dec 03, 2025

Equipment Class

DSS - Part 15 Spread Spectrum Transmitter

Documents & Files

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Attestation Statements

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Cover Letter(s)

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ID Label/Location Info

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RF Exposure Info

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Test Report

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Document Text

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

Attestation Statements

Cover Letter(s)

DongguanMLFTech.Co.,Ltd Address:No.8,QingpingRoad,QinghutouVillage,TangxiaTown,523726DongguanCity,PEOPLE'S REPUBLICOFCHINA. Sep.27,2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2BRZO-MLF-W7 I,theundersigned,herebyauthorizeKeywayTestingTechnology(Guangdong)Co.,Ltd.toactonour behalfinallmattersrelatingtothisapplicationforequipmentcertification. AnyactcarriedoutbyKeywayTestingTechnology(Guangdong)Co.,Ltd.shallhavethesameeffectas ourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswithDongguan MLFTech.Co.,Ltd WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) PrintedName:WenLeChen Title:Manager Tel.:+86-0769-87989645 Email:[email protected]

RF Exposure Info

Test Report

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Test Report

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Test Report

KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.3NUMBEROFHOPPINGCHANNEL TestResult ModulationPacket NumberofHopping Channel LimitResult GFSKDH17915PASS π/4DQPSK2-DH17915PASS 8DPSK3-DH17915PASS TestGraphs LowEndSpectrumChannelHoppingPlot GFSK HighEndSpectrumChannelHoppingPlot GFSK LowEndSpectrumChannelHoppingPlot π/4DQPSK HighEndSpectrumChannelHoppingPlot π/4DQPSK LowEndSpectrumChannelHoppingPlot 8DPSK HighEndSpectrumChannelHoppingPlot 8DPSK KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.4CONDUCTEDPEAKOUTPUTPOWER TestResult ModulationPacketTypeChannel PeakOutput Power (dBm) PeakOutput Power (mW) Max.Avg. Power (dBm) Limit (dBm) Result GFSKDH1 04.893.08None ≤30 PASS 395.353.43NonePASS 784.752.99NonePASS π/4DQPSK2-DH1 05.223.33None ≤20.97 PASS 395.643.66NonePASS 784.833.04NonePASS 8DPSK3-DH1 05.263.36NonePASS 395.783.78NonePASS 785.143.27NonePASS TestGraphs PeakOutputPower GFSK_Channel0 PeakOutputPower GFSK_Channel39 PeakOutputPower GFSK_Channel78 PeakOutputPower π/4DQPSK_Channel0 PeakOutputPower π/4DQPSK_Channel39 PeakOutputPower π/4DQPSK_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com PeakOutputPower 8DPSK_Channel0 PeakOutputPower 8DPSK_Channel39 PeakOutputPower 8DPSK_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.599%BANDWIDTH TestResult ModulationChannelCenterFrequency(MHz)99%BW(MHz) GFSK 024020.82287 3924410.81663 7824800.81087 π/4DQPSK 024021.1847 3924411.1789 7824801.1936 8DPSK 024021.1648 3924411.1703 7824801.1753 TestGraphs GFSK_DH1_Channel0π/4DQPSK_2-DH1_Channel0 GFSK_DH1_Channel39π/4DQPSK_2-DH1_Channel39 GFSK_DH1_Channel78π/4DQPSK_2-DH1_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com 8DPSK_3-DH1_Channel08DPSK_3-DH1_Channel39 8DPSK_3-DH1_Channel78 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,N.30 ofTangxiaDistrict,DongshenRoad,TangxiaTown,DongguanCity,Guangdong,China Telephone:+86(0)87182258www.keywaytest.com A.620DBBANDWIDTH TestResult ModulationChannelCenterFrequency(MHz)20dBBandwidth(MHz) GFSK 02402MHz0.8700 392441MHz0.8700 782480MHz0.8800 π/4DQPSK 02402MHz1.230 392441MHz1.270 782480MHz1.270 8DPSK 02402MHz1.220 392441MHz1.220 782480MHz1.230 TestGraphs GFSK_DH1_Channel0GFSK_DH1_Channel39 GFSK_DH1_Channel78π/4DQPSK_2-DH1_Channel0 π/4DQPSK_2-DH1_Channel39π/4DQPSK_2-DH1_Channel78

Test Report

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Rule Parts

Frequency Range

Power Output

15C

2.40 GHz - 2.48 GHz

3.78 mW