2A9WK-DB25032025 diving selfie stick

WELCOME GUIDE Model No.: DB2503 2025 DIVING SELFIE STICK ND 2

Rev1/26/2023 (ShenzhenYiseTechnologyCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2/5/2026 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2A9WK-DB2503 [ShenzhenYiseTechnologyCo.,Ltd]certifiesthattheequipmentforwhichauthorizationissoughtisnot “covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903of theFCCrules. [ShenzhenYiseTechnologyCo.,Ltd]certifiesthattheequipmentforwhichauthorizationissoughtdoes notincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.oranyofits successorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, LincolnLin/Manager Rev1/26/2023 (ShenzhenYiseTechnologyCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2/5/2026 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2A9WK-DB2503 [ShenzhenYiseTechnologyCo.,Ltd]certifiesthat,asofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofitssubsidiariesor affiliates)asanentityproducing“covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)LincolnLin/Manager

DongGuanSYLTechnologyCO.,LTD AntennaSpecification Manufacture：SYL ProductName：PD_P25091_BDP-30Antenna AntennaType：PCB TestDate：2025/11/20 Testedby ：CheckedBy:ApprovedBy: ChengMingWeiDuLinQianCongGen DongGuanSYLTechnologyCO.,LTD 1.GeneralDescription Manufacturer：DongGuanSYLTechnologyCO.,LTD Address： Room203,DongHuiIndustrialPark,No.198DaTangRoad, DongGuan,GuangDong,China ProductName：PD_P25091_BDP-30Antenna Productmodel：PD_P25091_BDP-30 AntennaType ：PCBAntenna TestFrequency ：2400-2480MHz AntennaGain ：＞ -4dBi VSWR ：＜ 3.2 Impedance ：50Ω Polarization：Linear DongGuanSYLTechnologyCO.,LTD 2.Antennasize: DongGuanSYLTechnologyCO.,LTD 3.GainandEfficiency Frequency （MHz） Gain （dBi） Effciency （%） AverageGain （dBi） Efficiency （dB） 24001.43359.329%-2.717-2.267 24100.92751.861%-3.416-2.852 24200.82952.112%-3.166-2.831 24300.88149.299%-3.258-3.072 24401.19250.672%-3.144-2.952 24501.68853.067%-2.735-2.752 24602.19459.423%-2.276-2.260 24702.11856.680%-2.438-2.466 24802.49961.727%-2.112-2.095 Average1.52954.908%-2.806-2.616 Peak2.49961.727%-2.112-2.095 DongGuanSYLTechnologyCO.,LTD 4.ReturnLoss DongGuanSYLTechnologyCO.,LTD 5.Antenna2440MHz2D-ThetaPattern 6.Antenna2440MHz2D-PhiPattern DongGuanSYLTechnologyCO.,LTD 7.Antenna2440MHz3D-HorizontalPattern 8.Antenna2440MHz3D-VerticalPattern 9.Antenna2440MHz3D-TotalPattern DongGuanSYLTechnologyCO.,LTD 10.TestSetupPhoto

ShenzhenYiseTechnologyCo.,Ltd ‘Date：2026-2-5 ProductModelNumber:DB2503 FCCID:2A9WK-DB2503 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:LincolnLin/Manager Email:[email protected] Telephone:13538218145 Onbehalfof:ShenzhenYiseTechnologyCo.,Ltd

ShenzhenYiseTechnologyCo.,Ltd OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:February5,2026 Subject;RequestforConfidentiality FCCID:2A9WK-DB2503 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:LincolnLin Title:Manager

AnnexA ExternalPhotos TestModelNo.:DB2503 Page 1 of3 AnnexA ExternalPhotos TestModelNo.:DB2503 Page 2 of3 AnnexA ExternalPhotos TestModelNo.:DB2503 Page 3 of3

Size:20*10mm 2025 diving selfie stick Model No.:DB2503 FCC ID:2A9WK-DB2503

AnnexB InternalPhotos TestModelNo.:DB2503 Page 1 of7 AnnexB InternalPhotos TestModelNo.:DB2503 Page 2 of7 AnnexB InternalPhotos TestModelNo.:DB2503 Page 3 of7 AnnexB InternalPhotos TestModelNo.:DB2503 Page 4 of7 AnnexB InternalPhotos TestModelNo.:DB2503 Page 5 of7 AnnexB InternalPhotos TestModelNo.:DB2503 Page 6 of7 AnnexB InternalPhotos TestModelNo.:DB2503 Page 7 of7 PCBantenna

MAXTestingCo.,Ltd.ReportNo.:MAX260101350P01-R01RF RFTESTREPORT ReportReferenceNo. ....................... :MAX260101350P01-R01RF FCCID.................................................:2A9WK-DB2503 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature)..: Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue ......................................... :February3,2026 TestingLaboratoryName ................ : MAXLABTestingCo.,Ltd. Address.................................................: 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname ............................... : ShenzhenYiseTechnologyCo.,Ltd Address.................................................: 201,BuildingA,DingshengKechuangPark,No.64,LongwoRoad 2,LongtianCommunity,LongtianStreet,Pingshandistrict,Shenzhen City,GuangdongProvince Testspecification..............................: Standard ................................................ :KDB447498D01GeneralRFExposureGuidancev06 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLABTesting Co.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader's interpretationofthereproducedmaterialduetoitsplacementandcontext. Testitemdescription........................: 2025divingselfiestick TradeMark............................................: Manufacturer ......................................... : ShenzhenYiseTechnologyCo.,Ltd Model/Typereference.........................: DB2503 ListedModels ...................................... : N/A Modulation...........................................:GFSK Frequency..............................................From2402MHzto2480MHz Rating.....................................................:DC3.7VFromBatteryorDC5VbyUSBport Result ..................................................... :PASS MAXTestingCo.,Ltd.ReportNo.:MAX260101350P01-R01RF RFEXPOSUREEVALUATIONMETHOD AccordingtoKDB447498D01GeneralRFExposureGuidancev06,Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluation forgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,isnotrequiredwhen thecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtestexclusion thresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]·[√f (GHz) ] ≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiation asspecifiedin§1.1307(b) EUTSpecification Frequencyband(Operating)WLAN:2.412GHz~2.462GHz WLAN:5.150GHz~5.250GHz WLAN:5.725GHz~5.850GHz OthersBT:2402-2480MHz DevicecategoryPortable(<20cmseparation) Mobile(>20cmseparation) Others Exposureclassification3.0for1-gSARand≤7.5for10-gextremitySAR AntennadiversitySingleantenna Multipleantennas Txdiversity Rxdiversity Tx/Rxdiversity Max.outputpower2.83dBm(0.00192W) Antennagain(Max)2.499dBi EvaluationappliedMPEEvaluation SAREvaluation MAXTestingCo.,Ltd.ReportNo.:MAX260101350P01-R01RF RFEXPOSUREEVALUATIONMETHOD SARTestExclusionThresholdsfor100MHz–6GHzand≤50mm ApproximateSARTestExclusionPowerThresholdsatSelectedFrequenciesandTestSeparation DistancesareillustratedinthefollowingTable. The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis ≤ 50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtest exclusion. MAXTestingCo.,Ltd.ReportNo.:MAX260101350P01-R01RF Maximummeasuredtransmitterpower. BR+EDR+BLE Operating Mode Freque ncy Measur ed Power max. power Antenna Gain min.test separation distance [√f(GHz)] ResultLimit (MHz)(dBm)(mW)(dBi)(mm) GFSK 24022.831.922.49951.5500.59473 24402.151.642.49951.5620.51253 24802.471.772.49951.5750.55623 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)] ThetestResultislessthan3.0for1-gSARand≤7.5for10-gextremitySAR. Conclusion:NoSARisrequired.

MAXLABTestingCo.,Ltd. ReportNo.:MAX26010135P01-R01 Page 1 of29 FCCPART15SUBPARTCTESTREPORT FCCPART15.247 ReportReferenceNo........................:MAX26010135P01-R01 FCCID. ................................................ :2A9WK-DB2503 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature) .. : Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue ......................................... :February3,2026 TestingLaboratoryName ................ : MAXLABTestingCo.,Ltd. Address.................................................: 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname ............................... : ShenzhenYiseTechnologyCo.,Ltd Address.................................................: 201,BuildingA,DingshengKechuangPark,No.64,LongwoRoad 2,LongtianCommunity,LongtianStreet,Pingshandistrict,Shenzhen City,GuangdongProvince Testspecification..............................: Standard................................................: FCCPart15.247 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLAB TestingCo.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthe reader'sinterpretationofthereproducedmaterialduetoitsplacementandcontext. Equipmentdescription.....................:2025divingselfiestick TradeMark ............................................ : Manufacturer.........................................: ShenzhenYiseTechnologyCo.,Ltd Model/Typereference ......................... : DB2503 ListedModels ...................................... : N/A Modulation ........................................... :GFSK Frequency..............................................From2402MHzto2480MHz Ratings...................................................: DC3.7VFromBatteryorDC5VbyUSBport Result ..................................................... :PASS MAXTestingCo.,Ltd. ReportNo.:MAX26010135P01-R01 Page2of31 TESTREPORT EquipmentunderTest:2025divingselfiestick Model/Type:DB2503 ListedModels:N/A ModelDeclaration:/ Applicant : ShenzhenYiseTechnologyCo.,Ltd Address: 201,BuildingA,DingshengKechuangPark,No.64,LongwoRoad 2,LongtianCommunity,LongtianStreet,Pingshandistrict,Shenzhen City,GuangdongProvince Manufacturer : ShenzhenYiseTechnologyCo.,Ltd Address: 201,BuildingA,DingshengKechuangPark,No.64,LongwoRoad 2,LongtianCommunity,LongtianStreet,Pingshandistrict,Shenzhen City,GuangdongProvince TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. MAXTestingCo.,Ltd. ReportNo.:MAX26010135P01-R01 Page3of31 Contents 1TESTSTANDARDS..............................................................................................................................4 2SUMMARY.................................................................................................................................................5 2.1GeneralRemarks..........................................................................................................................................5 2.2ProductDescription.....................................................................................................................................5 2.3EquipmentUnderTest.................................................................................................................................5 2.4ShortdescriptionoftheEquipmentunderTest(EUT).............................................................................5 2.5EUToperationmode.....................................................................................................................................6 2.6BlockDiagramofTestSetup.......................................................................................................................6 2.7RelatedSubmittal(s)/Grant(s)...................................................................................................................6 2.8Modifications...............................................................................................................................................6 3TESTENVIRONMENT........................................................................................................................7 3.1Addressofthetestlaboratory....................................................................................................................7 3.2TestFacility...................................................................................................................................................7 3.3Environmentalconditions............................................................................................................................7 3.4Summaryofmeasurementresults..............................................................................................................8 3.5Statementofthemeasurementuncertainty..............................................................................................8 3.6EquipmentsUsedduringtheTest..............................................................................................................9 4TESTCONDITIONSANDRESULTS.......................................................................................11 4.1ACPowerConductedEmission................................................................................................................11 4.2RadiatedEmissionsandBandEdge........................................................................................................14 4.3MaximumPeakOutputPower...................................................................................................................21 4.4PowerSpectralDensity................................…

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Test setup Test Model No.:DB2503 Test setup Test Model No.:DB2503