2AJQ7-CARTUNESIJOY CAR TUNES - PORTABLE CAR MODEL WIRELESS SPEAKER

TCB CALL página 1 File FCC ID: 2AJQ7-CARTUNES Please upload an exhibit that explains how does the TCB verify the new agent information: 1- Is the address of the agent a valid physical US mailing address (not a US post office box, not a virtual mailbox, not P.O. Boxes, not a vacant lot, not a public building, etc.) ○ We have checked if the address exists in a real and potential building (Google maps) + official US register, after this verification and the evidence below we can guarantee the following: not a US post office box not a virtual mailbox not P.O. Boxes not a vacant lot not a public building(note) ► We checked the FCC FRN Search based on the information provided by the grantee. On the official register from : https://apps.dos.ny.gov/publicInquiry/EntityDisplay TCB CALL página 2 In Google TCB CALL página 3 ► CONCLUSION by TCB: The ASOP defined and provided by grantee is VALID and confirmed. Therefore the exhibit "C5266091_X23_Ed1_US_Agent_Letter" included in the file is ok. 2- Is the agent physically located at that valid US address such that the agent can be legally served at that address? Yes , check above 3- Has the listed agent clearly agreed in writing to serve as the agent for the grantee at that address? Yes, it is included in the exhibit "C5266091_X23_Ed1_US_Agent_Letter" >

1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:QUESTUSACORP FRN:0025872284 ContactName:IkeySrour Address:495FlatbushAve,Brooklyn,NY11225,USA TelephoneNo:(718)-975-2586 Email:[email protected] Applicant: Companyname:QUESTUSACORP ProductDescription:IJOYCARTUNES-PORTABLECARMODELWIRELESSSPEAKER FRN:0025872284 FCCID:2AJQ7-CARTUNES ContactName:IkeySrour Address:495FlatbushAve,Brooklyn,NY11225,USA TelephoneNo:(718)-975-2586 Email:[email protected] [QUESTUSACORP]certifiesthat,asofthedateofthisfilingoftheapplication withtheTCB,[QUESTUSACORP]isourdesignatedUSagentforserviceof processfortheabovereferencedFCCID.[QUESTUSACORP]acceptsto maintainanagentfornolessthanoneyearafterthegranteehasterminatedall marketingandimportationortheconclusionofanycommissionrelated proceedinginvolvingequipment.[QUESTUSACORP]accepts,asofthedateof thefilingoftheapplication,theobligationofthedesignatedUSagentfor serviceofprocessfortheabovereferenceFCCID. TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. Date:2026/08/07 Applicant’sName:IkeySrourUSAgent’sName:IkeySrour Title:ManagerTitle:Manager SignatureSignature

AttestationStatement. OldCode:C526609124NewCode:00015544Ed.3 Changereason:FRNisaddedtotheApplicantinformationsection. 1/1 TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:QUESTUSACORP Granteecode:2AJQ7 FCCID:2AJQ7-CARTUNES FRN:0025872284 ContactName:IkeySrour Address:495FlatbushAve,Brooklyn,NY11225,USA TelephoneNo:(718)-975-2586 FaxNo:N/A Email:[email protected] i.[QUESTUSACORP](“theapplicant”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceiving anequipmentauthorizationpursuanttosection2.903oftheFCCrules.The applicantmustsignthiscertification. ii.[QUESTUSACORP](“theapplicant”)certifiesthat,asofthedateofthe filingoftheapplication,theapplicant[isnot](asaspecificallynamedentity oranyofitssubsidiariesoraffiliates)identifiedontheCoveredListasan entityproducing“covered”equipment.Theapplicantmustsignthis certification. [QUESTUSACORP](“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicant[isnot]identifiedontheCoveredList asanentityproducing“covered” equipment. Date:2026-08-07 Applicant’sName:IkeySrour Title:Manager Signature 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedbyparticular entities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

QUESTUSACORP Code00018768Ed.1 Item1.Thedeviceisabletoinstallsoftware/programinstallation? ☐ Yes,gotoItem2. ☒ No.Inthiscase,therestoftheitemsdonotapply.ThedevicecannotsupportinstallationofKaspersky cybersecurityoranti-virussoftware. DeviceIJOYCARTUNES-PORTABLECARMODEL WIRELESSSPEAKER CompanynameQUESTUSACORP Granteecode2AJQ7 FCCID2AJQ7-CARTUNES FRN0025872284 ContactnameIkeySrour Address495FlatbushAve,Brooklyn,NY11225,USA Telephonenumber(718)-975-2586 [email protected] Chipset/moduleinformationAC6965E OperatingSystem(ifapplicable)N/A StorageCapacity(harddriveorother permanentmemorystorage,ifapplicable) N/A 2 Item2.TechnicalRequirementsforKasperskyCybersecuritySoftware: #GeneralRequirements(ForallDevices)Yes/NoorN/AComments 1Internetconnectionforactivationandupdates(ForallOperating Systems) N/A #GeneralRequirements(ForWindowsDevices)Yes/NoorN/AComments 1Storage:1500MBfreespaceontheharddriveN/A 2OperatingSystem: MicrosoftWindows8,8.1,10&11Home/Pro/Enterprise Microsoft Windows7Starter/HomeBasic&Premium/Professional/ UltimateSP1orhigher N/A 3Processor:1GHzorhigher(x86orx64)N/A 4Memory(RAM)1GB(32-bit)or2GB(64-bit)N/A 5ScreenResolution:Minimumresolutionof1024x768N/A #GeneralRequirements(FormacOSdevices)Yes/NoorN/AComments 1OperatingSystemmacOS®13–14N/A 2Memory(RAM)4GBN/A 3Storage:3455MBfreespaceontheharddriveN/A #GeneralRequirements(ForAndroidDevices)Yes/NoorN/AComments 1Storage:150MBfreespaceN/A 2OperatingSystem:Android™10–14N/A 3ScreenResolution:Minimumresolutionof320x480N/A #GeneralRequirements(foriOSdevices)Yes/NoorN/AComments 1Storage:150MBfreespaceN/A 3 2OperatingSystem:iOS®17N/A #GeneralRequirements(ForLinuxsystem)Yes/NoorN/AComments 1Harddrive:1GBoffreespaceN/A 2CPU:IntelPentium1GHzorhigherN/A 3RAM:1GBN/A 4Minimumsoftwarerequirements: AlmaLinuxOS8orlater; AlterOS7.5orlater; AstraLinuxCommonEdition2.12orlater; CentOS6.7orlater; DebianGNU/Linux10.0orlater; EulerOS2.0orlater; OracleLinux7.3orlater; RedHatEnterpriseLinux6.7orlater; RockyLinux8.5orlater; SUSELinuxEnterpriseServer12.5orlater; Ubuntu12.04orlater; UncomOSHome/Business/Education/Enterprise2.2orlater; ALTLinuxWorkstaton/WorkstationK/Server/Education8or later; ROSALinuxWorkstation/Server12orlater; REDOS7.3andlater; N/A Afterreviewedthetechnicalrequirements,isthedevicecapableofsupportingtheinstallationof Kasperskysoftware? ☐Yes,gotoItem3. 4 ☒No.Inthiscase,therestoftheitemsdonotapply.ThedevicecannotsupportinstallationofKaspersky software Item3.ConnectivityCapabilities: #PhysicalInterfacePurposeJustification 1 1 #WirelessInterfacePurposeJustification 1 1 Afterthereviewofthisitems,thedevice: ☒Cannotsupportinstallationofanycybersecurityoranti-virussoftwareonthecoveredlist. ☐Potentiallycanoperatewithanycybersecurityoranti-virussoftwareonthecoveredlist–additionalthird- partyproofisprovidedtodemonstratecompliancewithrequirementsasof2.911(d)5(i),(ii)–“Proofof CompliancewithCoveredListSoftwareRequirements”ofthisdocumentapplies Signature:Name:IkeySrour Date:2026-08-07 1 Thejustificationfieldisusedtojustifywhythesoftwarecannotbereceivedthroughthatinterface.Checktheannexformore indications.

QUESTUSACORP ProductSimilarityDeclaration Productname:IJOYCARTUNES-PORTABLECARMODELWIRELESS SPEAKER Modelname:IJAST848-DG,IJ10816-DG,IJ10817-DG,OS-1989 FCCID:2AJQ7-CARTUNES We(QUESTUSACORP)herebystatethatallthemodelsareelectricalidentical includingthesamesoftwareparameterandhardwaredesign(i.e.,circuitdesign, PCBLayout,RFmodule/circuit,antennatype(s)andantennalocation,components onPCB,etc.,),samemechanicalstructureanddesign(includingproductenclosure, materials,etc.,),theonlydifferenceistheinappearancecolorandmodelname Signature: Name:IkeySrour Title:Manager 2026-08-07

C5266091_X10_Ed.2 1/1 QUESTUSACORP OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2026-08-07 Subject:RequestforConfidentiality FCCID:2AJQ7-CARTUNES ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☒ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☒ User’sManual ☐ NOTE 1 ☒ InternalPhotos ☐ NOTE 1 ☒ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof_180__daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name:IkeySrour Title:manager

C5266091_X8_Ed.1 1/1 Letter of Authorization < QUEST USA CORP > Company:QUEST USA CORP Address:495 Flatbush Ave, Brooklyn, NY 11225, USA Product Name: Model Number: FCC Identifier: IJOY CAR TUNES - PORTABLE CAR MODEL WIRELESS SPEAKER IJAST848-DG, IJ10816-DG, IJ10817-DG, OS-1989 2AJQ7-CARTUNES We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Ikey SrourDate:2026-08-07 Title: manager Signature of applicant:

40*18 mm 40*18 mm IJOY CAR TUNES - PORTABLE CAR MODEL WIRELESS SPEAKER IJOY CAR TUNES - PORTABLE CAR MODEL WIRELESS SPEAKER IJOY CAR TUNES - PORTABLE CAR MODEL WIRELESS SPEAKER Confirm the use of real appearance photos as references

RFEXPOSUREEVALUATION FCCID:2AJQ7-CARTUNES AccordingtoKDB447498D01GeneralRFExposureGuidancev06andFCC 1.1310:Thecriterialistedinthefollowingtableshallbeusedtoevaluatethe environmentimpactofhumanexposuretoradiofrequency(RF)Radiationas specifiedin§1.1307(b): RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualifyforTCBapproval. Channel (MHz) Maximum outputpower (dBm) Tuneup tolerance (dBm) MaxTune UpPower (dBm) Distance (mm) Calculation results Limit Operating Mode 2402-1.49 -1.49±1 -0.4950.2773 BT 2441-1.84-1.84±1-0.8450.2583 2480-1.85-1.85±1-0.8550.2593 2402-0.60 -0.60±1 0.4050.3403 2441-1.00-1.00±10.0050.3123 2480-1.01-1.01±1-0.0150.3143 2402-0.27 -0.27±1 0.7350.3673 2441-0.59-0.59±10.4150.3433 2480-0.57-0.57±10.4350.3483 TestResults:PASS.

TESTREPORT ReportNo.:8432EU011102W Applicant:QUESTUSA CORP Address:495 FlatbushAve, Brooklyn,NY 11225,USA ProductName:IJOYCARTUNES- PORTABLECARMODEL WIRELESSSPEAKER ModelNo.:IJAST848-DG(referto clause2.4) Trademark:N/A FCC ID:2AJQ7-CARTUNES Test Standard(s):47 CFRPart 15.247 Test Result:Pass Dateof Receipt:Jun. 11, 2026 Test Date:Jun. 12, 2026- Jun. 24, 2026 Dateof Issue:Aug.04, 2026 ISSUEDBY: SHENZHENEU TESTINGLABORATORYLIMITED Preparedby:Reviewedand Approvedby: PeachZheng/EngineerSallyZhang/Manager Page2 of 115ReportNo.: 8432EU011102W TRF Version:A01 RevisionRecord ReportVersionIssuedDateDescriptionStatus V0Aug.04, 2026OriginalValid Page3 of 115ReportNo.: 8432EU011102W TRF Version:A01 Tableof Contents 1COVERPAGE...................................................................................................................................................1 2GENERALINFORMATION........................................................................................................................5 2.1APPLICANTINFORMATION...................................................................................................................5 2.2MANUFACTURERINFORMATION...........................................................................................................5 2.3FACTORYINFORMATION......................................................................................................................5 2.4GENERALDESCRIPTIONOFE.U.T......................................................................................................5 2.5TECHNICALINFORMATIONOFE.U.T....................................................................................................6 3TESTSUMMARY.......................................................................................................................................7 3.1TESTSTANDARD................................................................................................................................7 3.2TESTVERDICT...................................................................................................................................7 3.3TESTLABORATORY............................................................................................................................9 4TESTCONFIGURATION.........................................................................................................................10 4.1TESTENVIRONMENT.........................................................................................................................10 4.2TESTEQUIPMENT.............................................................................................................................10 4.3DESCRIPTIONOFSUPPORTUNIT......................................................................................................13 4.4TESTMODE.....................................................................................................................................13 4.5DESCRIPTIONOFCALCULATION........................................................................................................13 4.5.1FieldStrengthCalculation..................................................................................................13 4.5.2DisturbanceCalculation.....................................................................................................13 4.6MEASUREMENTUNCERTAINTY..........................................................................................................14 4.7DEVIATIONFROMSTANDARDS..........................................................................................................14 4.8ABNORMALITIESFROMSTANDARDCONDITION..................................................................................14 5EVALUATIONRESULTS(EVALUATION)..............................................................................................15 5.1ANTENNAREQUIREMENT..................................................................................................................15 5.1.1Test Specification...............................................................................................................15 5.1.2Test Data ............................................................................................................................15 6RADIOSPECTRUMMATTERTESTRESULTS(RF) ............................................................................16 6.1CONDUCTEDEMISSIONATACPOWERLINE......................................................................................16 6.1.1Test Specification...............................................................................................................16 6.1.2E.U.T.Operation.................................................................................................................16 6.1.3Test SetupDiagram...........................................................................................................16 6.1.4Test Data ............................................................................................................................16 6.220DB BANDWIDTH...........................................................................................................................19 6.2.1Test Specification...............................................................................................................19 6.2.2E.U.T.Operation.................................................................................................................20 6.2.3Test SetupDiagram...........................................................................................................20 6.2.4Test Data ............................................................................................................................20 6.3MAXIMUMCONDUCTEDOUTPUTPOWER...........................................................................................21 6.3.1Test Specification..................................................................…

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V . S .W . R < 1.4 Polarization Type V ertical & Horizontal Frequenc Range2400 ~ 2500GHz Input Impendence(ohm)50 Ef ficiency (dB) 6 0.2 % 6 0.2 % Maximum Power (dBm) 1.6 8(XZ-plane) Gain (dBi)1.6 8 Peak EIRP(dBm)1.2 Tot. Rad. Pwr. (dBm)-1.2 (Input pwr – loss pwr) Product sp ecification Qu ick Reference Date Antenna m odule on the system board Ant. Port Input Pwr. (dBm)0 (Typ. BT class 2 output power) Directivity (dBi)1 (all direction antenna) Minimum Power (dBm ) -3.83(XZ-plane) Avg. Power (dBm)-0.48(XY-plane) All the technical data and information contained herein ar e subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Ga in Table Unit in dBi @2.44GHzXY-planeXZ-planeYZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board 1.68 1.35 -0.48 -3.83 1.11 -2.99 Design company:shenzhen HuaSai Electric Technology Co.Ltd. Address：Room 201, Building A, No.1 Qianwan 1st Road, Qianhai Shenzhen-Hong Kong Cooperation Zone, Shenzhen spce:ANT_XZR01 Return Loss The Environment of Antenna Radiation Pattern 3D radiation pattern diagram XY-planeXZ-planeYZ-plane