2BBOA-S10Wireless Headphone

Rev1/26/2023 Daximen(Shenzhen)TechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-7-22 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BBOA-S10 (“Daximen(Shenzhen)TechnologyCo.,Ltd.”)certifiesthattheequipmentforwhichauthorizationis soughtisnot“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuantto section2.903oftheFCCrules. (“Daximen(Shenzhen)TechnologyCo.,Ltd.”)certifiesthattheequipmentforwhichauthorizationis soughtdoesnotincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc. oranyofitssuccessorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyof itssuccessorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB 986446D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Applicantsignature)MarsZhou (Applicantprintedname) Rev1/26/2023 Daximen(Shenzhen)TechnologyCo.,Ltd. FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2026-7-22 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BBOA-S10 (“Daximen(Shenzhen)TechnologyCo.,Ltd.”)certifiesthat,asofthedateofthefilingoftheapplication, Daximen(Shenzhen)TechnologyCo.,Ltd.isnotidentifiedontheCoveredList(asaspecificallynamed entityoranyofitssubsidiariesoraffiliates)asanentityproducing“covered”equipment. Sincerely, (Applicantsignature) (Applicantprintedname)MarsZhou

Daximen(Shenzhen)TechnologyCo.,Ltd. 2.911(d)(7)USAAgentv1.4 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:Daximen(Shenzhen)TechnologyCo.,Ltd. Address:2002,ChuanghuiBuilding,WuheCommunity,BantianStreet,Longgang District,Shenzhen,China ProductName:WirelessHeadphone FCCID:2BBOA-S10 Model(s):S10 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[Daximen(Shenzhen)TechnologyCo.,Ltd. ] (“theapplicant”)designate[CELLT INC.] NOTE1 forthepurposeofacceptingserviceofprocessonbehalfoftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminated allmarketingandimportationoftheapplicableequipmentwithintheU.S.,orthe conclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicial proceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:CELLTINC. Address:140121STST#12958 SACRAMENTO,CA95811,USA FRN:0036412567 ContactName:ThompsonLim Applicant Companyname:Daximen(Shenzhen) TechnologyCo.,Ltd. Address:2002,ChuanghuiBuilding, WuheCommunity,BantianStreet, LonggangDistrict,Shenzhen,China FRN:0033889007 FCCGranteeCode:2BBOA Daximen(Shenzhen)TechnologyCo.,Ltd. 2.911(d)(7)USAAgentv1.4 TelephoneNo:001-424-3474188 Email:[email protected] ContactName:MarsZhou TelephoneNo:13728630039 Email:[email protected] Signature: Title:Manager Signature: Title:Manager Date:2026-7-22Date:2026-7-22 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

Daximen(Shenzhen)TechnologyCo.,Ltd. Date ： 2026-7-22 Product/ModelNumber:WirelessHeadphone/S10 FCCID ： 2BBOA-S10 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By:MarsZhou ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:13728630039 Onbehalfof:Daximen(Shenzhen)TechnologyCo.,Ltd.

Daximen(Shenzhen)TechnologyCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:July22,2026 Subject;RequestforConfidentiality FCCID:2BBOA-S10 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:MarsZhou Title:Manager

Daximen(Shenzhen)TechnologyCo.,Ltd. DearSirs: Weherebydeclarethatbecausetheearphonesizeistoosmall,theFCCIDnumberis printedontheusermanualandpackingbox,herebydeclare. FCCID:2BBOA-S10 Signature: Name: MarsZhou Title: Manager Company:Daximen(Shenzhen)TechnologyCo.,Ltd.

FCCID:2BBOA-S10 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093 ， UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤5mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, LeftWirelessHeadphone BT Mode Freque ncy (MHz) Max Power (dBm) Targetpower W/tolerance (dBm) Maxtune uppower tolerance (dBm) MaxPower (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2402 -1.85 -1±1.00.01.00005.000.31003.0 2441 -1.94 -1.0±1.00.01.00005.000.31253.0 2480 -2.12 -2.0±1.0 -1.00.79435.000.25023.0 Π/4-DQP SK 2402 -0.89 0±1.0 1.01.0005.000.39023.0 2441 -1.01 -1.0±1.00.01.2595.000.31253.0 2480 -1.16 -1.0±1.00.01.2595.000.31503.0 BLE Mode Freque ncy (MHz) Max Power (dBm) Targetpower W/tolerance (dBm) Maxtune uppower tolerance (dBm) MaxPower (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2402 -1.87 -1.0±1.0 0.01.0005.000.31003.0 2440 -1.98 -1.0±1.00.01.2595.000.31243.0 2480 -2.11 -2.0±1.0-1.01.2595.000.25023.0 RightWirelessHeadphone SoaSARtestisnotrequired BT Mode Freque ncy (MHz) Max Power (dBm) Targetpower W/tolerance (dBm) Maxtune uppower tolerance (dBm) MaxPower (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2402 -0.12 0±1.01.01.25895.000.39023.0 2441 -0.59 0±1.01.01.25895.000.39343.0 2480 -0.85 0±1.0 1.01.25895.000.39653.0 Π/4-DQP SK 2402 0.7 0±1.0 1.01.25895.000.39023.0 2441 0.28 0±1.01.01.25895.000.39343.0 2480 0.04 0±1.01.01.25895.000.39653.0 BLE Mode Freque ncy (MHz) Max Power (dBm) Targetpower W/tolerance (dBm) Maxtune uppower tolerance (dBm) MaxPower (mW) Min. Distance (mm) Calc. thresholds limit GFSK 2402 -0.2 0±1.0 1.01.25895.000.39023.0 2440 -0.65 0±1.01.01.25895.000.39333.0 2480 -0.91 0±1.01.01.25895.000.39653.0

Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page1of23 Left Wireless Headphone RF Test Data Duty Cycle........................................................................................................................................................................2 Maximum Peak Conducted Output Power.......................................................................................................................5 -6dB Bandwidth................................................................................................................................................................8 Occupied Channel Bandwidth........................................................................................................................................11 Maximum Power Spectral Density Level....................................................................................................................... 14 Band Edge......................................................................................................................................................................17 Conducted RF Spurious Emission.................................................................................................................................20 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page2of23 Duty Cycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNT BLE 1M2402Ant116.167.929.9 NVNT BLE 1M2440Ant116.167.929.9 NVNT BLE 1M2480Ant116.167.929.9 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page3of23 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page4of23 Duty Cycle NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page5of23 Maximum Peak Conducted Output Power ConditionModeFrequency (MHz) AntennaConducted Power(dBm) Conducted Power(W) Limit Conducted(dBm) Verdict NVNT BLE 1M 2402Ant1-1.870.0006530Pass NVNT BLE 1M 2440Ant1-1.980.0006330Pass NVNT BLE 1M 2480Ant1-2.110.0006230Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page6of23 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page7of23 Peak Power NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page8of23 -6dB Bandwidth ConditionModeFrequency (MHz) Antenna-6dBBandwidth (MHz) Limit-6dBBandwidth (MHz) Verdict NVNTBLE 1M 2402Ant10.51290.5Pass NVNTBLE 1M 2440Ant10.50630.5Pass NVNTBLE 1M 2480Ant10.50580.5Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page9of23 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page10of23 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page11of23 Occupied Channel Bandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTBLE 1M2402Ant11.0385 NVNTBLE 1M2440Ant11.0393 NVNTBLE 1M2480Ant11.0267 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page12of23 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page13of23 OBW NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page14of23 Maximum Power Spectral Density Level ConditionModeFrequency (MHz) AntennaConductedPSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNTBLE 1M 2402Ant1-19.958Pass NVNTBLE 1M 2440Ant1-19.828Pass NVNTBLE 1M 2480Ant1-19.778Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page15of23 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page16of23 PSD NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page17of23 Band Edge ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTBLE 1M2402Ant1-49.85-20Pass NVNTBLE 1M2480Ant1-53.6-20Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page18of23 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page19of23 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page20of23 Conducted RF Spurious Emission ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTBLE 1M2402Ant1-48.21-20Pass NVNTBLE 1M2440Ant1-48.2-20Pass NVNTBLE 1M2480Ant1-42.96-20Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page21of23 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page22of23 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page23of23 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission

Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page1of23 Right Wireless Headphone RF Test Data Duty Cycle........................................................................................................................................................................2 Maximum Peak Conducted Output Power.......................................................................................................................5 -6dB Bandwidth................................................................................................................................................................8 Occupied Channel Bandwidth........................................................................................................................................11 Maximum Power Spectral Density Level....................................................................................................................... 14 Band Edge......................................................................................................................................................................17 Conducted RF Spurious Emission.................................................................................................................................20 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page2of23 Duty Cycle ConditionModeFrequency(MHz)AntennaDutyCycle(%)CorrectionFactor(dB)1/T(kHz) NVNT BLE 1M2402Ant127.765.575.76 NVNT BLE 1M2440Ant127.765.575.76 NVNT BLE 1M2480Ant126.725.735.99 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page3of23 Duty Cycle NVNT BLE 1M 2402MHz Ant1 Duty Cycle NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page4of23 Duty Cycle NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page5of23 Maximum Peak Conducted Output Power ConditionModeFrequency (MHz) AntennaConducted Power(dBm) Conducted Power(W) Limit Conducted(dBm) Verdict NVNT BLE 1M 2402Ant1-0.20.0009530Pass NVNT BLE 1M 2440Ant1-0.650.0008630Pass NVNT BLE 1M 2480Ant1-0.910.0008130Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page6of23 Peak Power NVNT BLE 1M 2402MHz Ant1 Peak Power NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page7of23 Peak Power NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page8of23 -6dB Bandwidth ConditionModeFrequency (MHz) Antenna-6dBBandwidth (MHz) Limit-6dBBandwidth (MHz) Verdict NVNTBLE 1M 2402Ant10.65410.5Pass NVNTBLE 1M 2440Ant10.65310.5Pass NVNTBLE 1M 2480Ant10.65390.5Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page9of23 -6dB Bandwidth NVNT BLE 1M 2402MHz Ant1 -6dB Bandwidth NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page10of23 -6dB Bandwidth NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page11of23 Occupied Channel Bandwidth ConditionModeFrequency(MHz)Antenna99%OBW(MHz) NVNTBLE 1M2402Ant11.0263 NVNTBLE 1M2440Ant11.0314 NVNTBLE 1M2480Ant11.0341 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page12of23 OBW NVNT BLE 1M 2402MHz Ant1 OBW NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page13of23 OBW NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page14of23 Maximum Power Spectral Density Level ConditionModeFrequency (MHz) AntennaConductedPSD (dBm/3kHz) Limit (dBm/3kHz) Verdict NVNTBLE 1M 2402Ant1-17.488Pass NVNTBLE 1M 2440Ant1-17.898Pass NVNTBLE 1M 2480Ant1-18.168Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page15of23 PSD NVNT BLE 1M 2402MHz Ant1 PSD NVNT BLE 1M 2440MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page16of23 PSD NVNT BLE 1M 2480MHz Ant1 Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page17of23 Band Edge ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTBLE 1M2402Ant1-52.38-20Pass NVNTBLE 1M2480Ant1-54.61-20Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page18of23 Band Edge NVNT BLE 1M 2402MHz Ant1 Ref Band Edge NVNT BLE 1M 2402MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page19of23 Band Edge NVNT BLE 1M 2480MHz Ant1 Ref Band Edge NVNT BLE 1M 2480MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page20of23 Conducted RF Spurious Emission ConditionModeFrequency(MHz)AntennaMaxValue(dBc)Limit(dBc)Verdict NVNTBLE 1M2402Ant1-46.73-20Pass NVNTBLE 1M2440Ant1-45.47-20Pass NVNTBLE 1M2480Ant1-48.71-20Pass Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page21of23 Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2402MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page22of23 Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2440MHz Ant1 Emission Report No.:SZNTT26025061E1-2 SZNTT-TR728-0Page23of23 Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Ref Tx. Spurious NVNT BLE 1M 2480MHz Ant1 Emission

SymbolsLWTA Dimensions 1.60±0.200.80±0.200.80±0.200.30±0.10 NumberTerminalName ① INPUT ② NC Dimensions(Unit: mm) w ①② ( Side View) ( Bottom View) ( Top View) A T L Shenzhen HanyangAntenna Design Co. Ltd. 1.Bluetooth 2.Dual-band WLAN 3.ISM and UWB 1.Surfacemountedelementwithasmalldimensionof1.6×0.8×0.8mmmeetfutureminiaturizationtrend. 2.EmbeddedandLTCC(lowtemperatureco-firedceramic)technologyisabletointegratewithsystemdesign aswellasbeatifyingthehousingoffinalproduct. 3.Miniaturization,wideband,highstability,lowESR,andlowtolerance. 4.Dual-bandresonancesinthedominantandharmonicmodesenablesmultibandoperations. 5.Novelground-radiationtechniqueenablesradiationfromboththeantennaandthegroundplane. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 Features: Applications: RF chip ANT chipANT pattern PCB ground Mode-2 Mode-1 P/N: HY160808 SRF09 Model：S10 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page1 Layout-1 (3.5mm×6.5mm) ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page2 1.5 1 3.5 2.5 0201 footprint (E1) 0201 footprint (E2) 0603 footprint (ANT) RF Input/Output 6.5 0.5 0.5 0.5 1.5 3.5 2.5 0201 footprint (E3) 6.5 Top layer: Bottom layer: 0.5 0.5 RF chip E1 E3 E2 ANT Equivalentcircuit: P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 2.5 0201 footprint 0603 footprint 10 0.5 1.5 0201 footprint 1.5 3 2.5 10 1.5 2 0.5 0201 footprint Layout-2 (1.5mm×10mm) Top layer: Bottom layer: P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page3 RF Input/Output ElectricalCharacteristics: CharacteristicCurves: FeatureSpecification 1 Centralfrequency2.45GHz 2 Bandwidth>150MHz 3 Peak gain2.78dBi 4 VSWR<2 5 PolarizationLinear 6 AzimuthbeamwidthOmnidirectional 7 Impedance50Ω P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page5 Antenna type: Chip antenna RadiationPattern: Y-ZPlaneX-ZPlane coordinates： 深圳市宝安区前进二路宝运达物流信息大厦12A10/12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page5 RadiationPerformance: P/N: HY160808 SRF07, HY160808 SRF08,HY160808 SRF09 深圳汉阳天线设计有限公司 Shenzhen Hanyang Antenna Design Co. Ltd. X-YPlane Frequency 2400MHz2450MHz2500MHz Avg.gain-1.92-1.35-1.56 Peakgain1.792.782.66 Efficiency74.5580.2576.98 Temperature：40±2°C Humidity：90~95%RH Duration：500h Recovery conditions：Room temperature Recovery Time：24h (Class1) or 48h (Class2) Test Temperature Operating Temperature Temperature RelativeHumidity 25°C±5°C -25°C~+125°C 5~40°C 20~70% Notenoughsolder Weak holding forcemay cause bad connection between the chipandPCB. RecommendedSolderingAmounts The optimal solder fillet amounts forre-flowsoldering 天线厚度 以下 The optimal solder fillet amounts for wavesoldering DependabilityTest Too much solder Cracks tend to occur due to large stress. MoistureProof OptimumSolderAmount forReflowSoldering Solderability At least 95% of the terminal electrode is covered by newsolder. Preheating conditions:80 to 120°C;10~30s. Solder Tem p e r at u r e :2 3 5 ±5°CDuration:2 ±0.5s , Solder Tempe r ature:24 5±5°CDu rat ion:2±0.5s P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAntennaDesignCo.Ltd. Page6 10±1S AppliedForce:5NDuration:10±1S Preheating conditions: up-category temperature, 1h Recovery time:24±1h InitialMeasurement Cycling Times: 5 times, 1 cycle, 4steps: Preheating80to120°C;10~30s.SolderTemperature:235±5°C;Duration:2±0.5s;SolderTemperature:245±5°C Duration:2±0.5s;Preheating100to200°C;10±2min. SolderTemperature:265±5°C;Duration:10±1s Cleanthecapacitorwithsolventandexamineitwitha10X(min.)microscope. RecoveryTime:24±2h Recoverycondition:Roomtemperature Test Board: Al 2 O 3 orPCBWarp:1mm Speed:0.5mm/sec. Unit:mm Themeasurementshouldbemadewiththeboardinthe bendingposition. Resistance to Soldering Heat ResistancetoFlexureofSubstrate Temperature CycleTest P/N: HY160808 SRF09 Shenzhen HanyangAntenna Design Co. Ltd. Shenzhen BaoanDistrict Qianjin2 Road BaoYunda logistics information building 12A10 tel：0755-23069700 ShenzhenHanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthis reportandthisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanyperson orfirmwithoutthepriorwrittenconsentofShenzhenHanyangAnten…

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ShenzhenNTTTestingTechnologyCo.,Ltd.ReportNo.:SZNTT26025061E1-2 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage1of36 TESTREPORT Applicant:Daximen(Shenzhen)TechnologyCo.,Ltd. Address: 2002,ChuanghuiBuilding,WuheCommunity,BantianStreet, LonggangDistrict,Shenzhen,China Manufacturer:Daximen(Shenzhen)TechnologyCo.,Ltd. Address: 2002,ChuanghuiBuilding,WuheCommunity,BantianStreet, LonggangDistrict,Shenzhen,China ProductName:WirelessHeadphone ModelNumber:S10 Trademark:N/A FCCID:2BBOA-S10 TestDate: Jun.17,2026–Jul.29,2026 DateofReport: Jul.30,2026 TestResult: ThisdevicedescribedabovehasbeentestedbyNTT,andthetest resultsshowthattheequipmentundertest(EUT)isincompliance withtheStandardrequirements.Anditisapplicableonlytothetested sampleidentifiedinthereport. TestProcedureUsed: Standards:FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10-2020+Cor.1-2023+C63.10a-2024+Erratato C63.10a-2024 KDB558074D0115.247MeasGuidancev05r02 Preparedby(TestEngineer): CindyQin Approved(Manager): KenWu Approved(Manager): AbelYu ShenzhenNTTTestingTechnologyCo.,Ltd.ReportNo.:SZNTT26025061E1-2 SZNTT-TR828-0Tel:0755-27889935Web:http://www.ntt-testing.comPage2of36 TABLEOFCONTENT 1.GeneralInformation......................................................................................4 1.1.DescriptionofDevice(EUT).......................................................................................................................4 1.2.ChannelList..................................................................................................................................................4 1.3.Summaryoftestresult................................................................................................................................5 1.4.SpecialAccessoriesandAuxiliaryEquipment........................................................................................5 1.5.Testmode......................................................................................................................................................5 1.6.Testconfiguration.........................................................................................................................................5 1.7.BlockDiagram...............................................................................................................................................6 1.8.TestConditions.............................................................................................................................................6 1.9.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................6 1.10.TestFacility..................................................................................................................................................7 1.11.TestEquipment...........................................................................................................................................8 2.Conductedemissionatthemainsterminalstest....................................10 2.1.Limit..............................................................................................................................................................10 2.2.TestSetup....................................................................................................................................................10 2.3.TestProcedure............................................................................................................................................10 2.4.TestResult...................................................................................................................................................11 3.RadiatedSpuriousEmissions...................................................................15 3.1.Limit..............................................................................................................................................................15 3.2.TestSetup....................................................................................................................................................16 3.3.TestProcedure............................................................................................................................................18 3.4.TestResult...................................................................................................................................................19 4.ConductedSpuriousEmissions................................................................29 4.1.Limit..............................................................................................................................................................29 4.2.TestSetup....................................................................................................................................................29 4.3.TestProcedure............................................................................................................................................29 4.4.TestResult...................................................................................................................................................30 5.BandEdgeMeasurement...........................................................................31 5.1.Limit..............................................................................................................................................................31 5.2.Testsetup....................................................................................................................................................31 …

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