2A5PJ-EH925ULTRAHHeadset

DongguanDareuElectronicsAudioCo.,LTD No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Dec.8,25 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:2A5PJ-EH925ULTRAH ProductName:Headset Thisletterservesasanattestationthattheequipmentidentifiedaboveisnot(selectone)"covered"software asdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,asoutlined inFCC22-84andKDB986446. 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, PrintedName:BoJiang Title:R&DManager Address:No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.ChinaTel.:+860769 86308806 Email:[email protected] DongguanDareuElectronicsAudioCo.,LTD No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.China 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

DongguanDareuElectronicsAudioCo.,LTD No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:12/8/2025 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2A5PJ-EH925ULTRAH DongguanDareuElectronicsAudioCo.,LTDcertifiesthat,asofthedateofthefilingoftheapplication, theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§1.50002ofreference chapter,asanentityproducing“covered”communicationequipment.Theequipmentforwhich authorizationissoughtisnot“covered”telecommunicationsequipmentandvideosurveillance equipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibitedfrom receivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, PrintedName:BoJiang Title:R&DManager Address:No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.ChinaTel.:+86 076986308806 Email:[email protected]

DongguanDareuElectronicsAudioCo.,LTD No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.China 12/8/2025 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2A5PJ-EH925ULTRAH 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, Title:R&DManager Address:No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.ChinaTel.:+86 076986308806 Email:[email protected]

DongguanDareuElectronicsAudioCo.,LTD No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.China 2025/12/2 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2A5PJ-EH925ULTRAH I,theundersigned,herebyauthorize(ShenzhenAnbotekComplianceLaboratoryLimited.)toactonour behalfinallmattersrelatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenAnbotekComplianceLaboratoryLimited.)shallhavethesameeffectas ourownandIacknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsof certification,asspecifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(Dongguan DareuElectronicsAudioCo.,LTD). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, PrintedName:BoJiang Title:R&DManager Tel.:+86076986308806 Fax:+86076986308826 Email:[email protected]

DongguanDareuElectronicsAudioCo.,LTD No.110,shijieshidanMidRd,shijieTown,DongguanCity,GuangdongProvince.China ProductSimilarityDeclaration Productname:Headset Modelname:EH925Ultra,TH662 FCCID:2A5PJ-EH925ULTRAH We(DongguanDareuElectronicsAudioCo.,LTD)herebystate thatallthemodelsareelectricalidenticalincludingthesame softwareparameterandhardwaredesign(i.e.,circuitdesign,PCB Layout,RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),theonly differenceisthemodelname. Signature: Name:BoJiang Title:R&DManager Date:Dec.8,25

LabelLocation Confirmtheuseofrealappearancephotosasreferences Labelsize: （ L:4.8cm*W:4cm ） ProductName:Headset ModelNo.:EH925Ultra FCCID:2A5PJ-EH925ULTRAH

RFEXPOSUREEVALUATION FCCID:2A5PJ-EH925ULTRAH AccordingtoKDB447498D01MobileandPortableDevicesRFExposureProcedures andEquipmentAuthorizationPoliciesv06. AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiationas specifiedin§1.1307(b): RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnotrequired, portabletransmitterswithoutputpowergreaterthantheapplicablelowthresholdrequire SARevaluationtoqualifyforTCBapproval. Channel (MHz) Maximum output power (dBm) Tuneup tolerance (dBm) MaxTuneUp Power(dBm) Distance (mm) Calculation results Limit Operating Mode 24023.643.64±14.64050.9023 GFSK24412.552.55 ±1 3.55050.7083 24802.302.30±13.30050.6733 24025.875.87±16.87051.5083 π/4-DQPSK24414.784.78 ±1 5.78051.1833 24804.654.65±15.65051.1573 24026.486.48±17.48051.7353 8DPSK24415.325.32 ±1 6.32051.3393 24805.165.16±16.16051.3013 24023.673.67±14.67050.9083 GFSK24402.482.48 ±1 3.48050.6963 24802.182.18±13.18050.6553 24023.613.61±14.61050.8963 GFSK24402.452.45 ±1 3.45050.6913 24802.182.18±13.18050.6553 24020.980.98 ±1 1.98050.4893 GFSK24401.801.80±12.80050.5953 24802.492.49±13.49050.7033 Result:NoStandaloneSARtestisrequired.

AntennaSpecification Specifications Summary ITEMSPEC. ModelNameMIFA2.4GHz CenterFrequency2400MHz0.86dBi 2440MHz0.27dBi 2480MHz0.48dBi MAX.GAIN1.15dBi PolarizationHorizontal AzimuthBeamPatternOmni-directional Impedance50Ω AntennaLength32.0mm AntennaPhoto&Length(mm) TestDate20240513 Dongguan Dareu Electronics Audio Co., LTD Room 3, Building No. 11, Futian Road, Hetianxia, Shijie Town, Dongguan City, Guangdong province, China 1.Mainantenna:2400MHz 1.1.Polar 1.2Total 2.Mainantenna:2440MHz 2.1Polar 2.2Total 3.Mainantenna:2480MHz 3.1Polar 3.2Total 4测试数据

ReportNo.:1812C50535312502-01 Page 1 of 33 AppendixTestData ReportNo.: 1812C50535312502-01 TestSampleNo.:1-2-2 StartTestDate:2025-10-22FinishTestDate:2025-10-22 TestEngineer:Auditor: Temperature:22.8°CRelativeHumidity:48% Pressure:101kPa AppendixA:6dBBandwidth TestResult Test Mode AntennaFrequency[MHz] 6dBBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt124020.6362401.6722402.3080.5PASS BLE_1MAnt124400.6442439.6722440.3160.5PASS BLE_1MAnt124800.6562479.6642480.3200.5PASS BLE_2MAnt124021.1082401.4202402.5280.5PASS BLE_2MAnt124401.0962439.4282440.5240.5PASS BLE_2MAnt124801.0962479.4282480.5240.5PASS ReportNo.:1812C50535312502-01 Page 2 of 33 TestGraphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS ReportNo.:1812C50535312502-01 Page 3 of 33 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS ReportNo.:1812C50535312502-01 Page 4 of 33 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS ReportNo.:1812C50535312502-01 Page 5 of 33 AppendixB:99%OccupiedBandwidth TestResult Test Mode AntennaFrequency[MHz] OCB [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict BLE_1MAnt124021.00962401.49602402.5056------ BLE_1MAnt124401.01022439.49852440.5087------ BLE_1MAnt124801.01032479.49862480.5089------ BLE_2MAnt124022.01562401.00842403.0240------ BLE_2MAnt124402.00592439.01742441.0233------ BLE_2MAnt124802.01692479.00952481.0264------ ReportNo.:1812C50535312502-01 Page 6 of 33 TestGraphs BLE_1M-Ant1-2402 BLE_1M-Ant1-2440 ReportNo.:1812C50535312502-01 Page 7 of 33 BLE_1M-Ant1-2480 BLE_2M-Ant1-2402 ReportNo.:1812C50535312502-01 Page 8 of 33 BLE_2M-Ant1-2440 BLE_2M-Ant1-2480 ReportNo.:1812C50535312502-01 Page 9 of 33 AppendixC:Maximumconductedoutputpower TestResultPeak Test Mode Antenna Frequency [MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict BLE_1MAnt124023.67≤30PASS BLE_1MAnt124402.48≤30PASS BLE_1MAnt124802.18≤30PASS BLE_2MAnt124023.61≤30PASS BLE_2MAnt124402.45≤30PASS BLE_2MAnt124802.18≤30PASS TestGraphsPeak BLE_1M-Ant1-2402-PASS ReportNo.:1812C50535312502-01 Page 10 of 33 BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS ReportNo.:1812C50535312502-01 Page 11 of 33 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS ReportNo.:1812C50535312502-01 Page 12 of 33 BLE_2M-Ant1-2480-PASS ReportNo.:1812C50535312502-01 Page 13 of 33 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaFrequency[MHz]Result[dBm/3kHz]Limit[dBm/3kHz]Verdict BLE_1MAnt12402-11.91≤8.00PASS BLE_1MAnt12440-13.05≤8.00PASS BLE_1MAnt12480-13.18≤8.00PASS BLE_2MAnt12402-14.14≤8.00PASS BLE_2MAnt12440-15.17≤8.00PASS BLE_2MAnt12480-15.62≤8.00PASS ReportNo.:1812C50535312502-01 Page 14 of 33 TestGraphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS ReportNo.:1812C50535312502-01 Page 15 of 33 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS ReportNo.:1812C50535312502-01 Page 16 of 33 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS ReportNo.:1812C50535312502-01 Page 17 of 33 AppendixE:Bandedgemeasurements TestResult Test Mode AntennaChName Frequency [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict BLE_1MAnt1Low24023.27-49.3≤-16.73PASS BLE_1MAnt1High24801.98-49.68≤-18.02PASS BLE_2MAnt1Low24023.61-30.12≤-16.39PASS BLE_2MAnt1High24802.26-52.29≤-17.74PASS Remark:Regardingthespuriousemissionsfrom30MHzto26.5GHz,thecablelosehavebeensetinthe 'offset'oftheSpectrumAnalyzerduringthetest. ReportNo.:1812C50535312502-01 Page 18 of 33 TestGraphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS ReportNo.:1812C50535312502-01 Page 19 of 33 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2480-PASS ReportNo.:1812C50535312502-01 Page 20 of 33 AppendixF:ConductedSpuriousEmission TestResult Test Mode Antenna Frequency [MHz] Freq.Range [MHz] Ref. Level [dBm] Result [dBm] Limit [dBm] Verdict BLE_1MAnt124020~Reference3.523.52---PASS BLE_1MAnt1240230~10003.52-69.35≤-16.48PASS BLE_1MAnt124021000~265003.52-38.93≤-16.48PASS BLE_1MAnt124400~Reference2.092.09---PASS BLE_1MAnt1244030~10002.09-68.8≤-17.91PASS BLE_1MAnt124401000~265002.09-42.47≤-17.91PASS BLE_1MAnt124800~Reference1.941.94---PASS BLE_1MAnt1248030~10001.94-67.93≤-18.06PASS BLE_1MAnt124801000~265001.94-42.02≤-18.06PASS BLE_2MAnt124020~Reference3.523.52---PASS BLE_2MAnt1240230~10003.52-68.5≤-16.48PASS BLE_2MAnt124021000~265003.52-41.62≤-16.48PASS BLE_2MAnt124400~Reference2.372.37---PASS BLE_2MAnt1244030~10002.37-68.13≤-17.63PASS BLE_2MAnt124401000~265002.37-40.74≤-17.63PASS BLE_2MAnt124800~Reference2.092.09---PASS BLE_2MAnt1248030~10002.09-68.85≤-17.91PASS BLE_2MAnt124801000~265002.09-42.05≤-17.91PASS Remark:Regardingthespuriousemissionsfrom30MHzto26.5GHz,thecableloseandattenuator factorshavebeensetinthe'InputCorrection'oftheSpectrumAnalyzerduringthetest. ReportNo.:1812C50535312502-01 Page 21 of 33 TestGraphs BLE_1M-Ant1-2402-0~Reference-PASS BLE_1M-Ant1-2402-30~1000-PASS ReportNo.:1812C50535312502-01 Page 22 of 33 BLE_1M-Ant1-2402-1000~26500-PASS BLE_1M-Ant1-2440-0~Reference-PASS ReportNo.:1812C50535312502-01 Page 23 of 33 BLE_1M-Ant1-2440-30~1000-PASS BLE_1M-Ant1-2440-1000~26500-PASS ReportNo.:1812C50535312502-01 Page 24 of 33 BLE_1M-Ant1-2480-0~Reference-PASS BLE_1M-Ant1-2480-30~1000-PASS ReportNo.:1812C50535312502-01 Page 25 of 33 BLE_1M-Ant1-2480-1000~26500-PASS BLE_2M-Ant1-2402-0~Reference-PASS ReportNo.:1812C50535312502-01 Page 26 of 33 BLE_2M-Ant1-2402-30~1000-PASS BLE_2M-Ant1-2402-1000~26500-PASS ReportNo.:1812C50535312502-01 Page 27 of 33 BLE_2M-Ant1-2440-0~Reference-PASS BLE_2M-Ant1-2440-30~1000-PASS ReportNo.:1812C50535312502-01 Page 28 of 33 BLE_2M-Ant1-2440-1000~26500-PASS BLE_2M-Ant1-2480-0~Reference-PASS ReportNo.:1812C50535312502-01 Page 29 of 33 BLE_2M-Ant1-2480-30~1000-PASS BLE_2M-Ant1-2480-1000~26500-PASS ReportNo.:1812C50535312502-01 Page 30 of 33 AppendixG:DutyCycle TestResult Test Mode Antenna Frequency [MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] BLE_1MAnt124020.410.6365.081.87 BLE_1MAnt124400.410.6266.131.80 BLE_1MAnt124800.410.6365.081.87 BLE_2MAnt124020.220.6235.484.50 BLE_2MAnt124400.220.6235.484.50 BLE_2MAnt124800.220.6235.484.50 ReportNo.:1812C50535312502-01 Page 31 of 33 TestGraphs NTNV-BLE_1M-Ant1-2402 NTNV-BLE_1M-Ant1-…

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Page 1 of 32 FCC Test Report Report No.:1812C50535312502 Applicant:Dongguan Dareu Electronics Audio Co., LTD Address: No.110, shijie shidan Mid Rd, shijie Town, Dongguan City, Guangdong Province. China Product Name:Headset Report Date:2025-12-02 Shenzhen Anbotek Compliance Laboratory Limited #检测章# #资质章# Report No.:1812C50535312502Page 2 of 32 FCC ID: 2A5PJ-EH925ULTRAH Contents 1. General Information ...............................................................................................................................6 1.1. Client Information ........................................................................................................................6 1.2. Description of Device (EUT) ........................................................................................................6 1.3. Auxiliary Equipment Used During Test........................................................................................7 1.4. Operation channel list..................................................................................................................7 1.5. Description of Test Modes...........................................................................................................7 1.6. Measurement Uncertainty ...........................................................................................................8 1.7. Additional Instructions .................................................................................................................8 1.8. Test Summary .............................................................................................................................9 1.9. Description of Test Facility ........................................................................................................10 1.10. Disclaimer................................................................................................................................10 1.11. Test Equipment List.................................................................................................................11 2. Antenna requirement ...........................................................................................................................13 2.1. Conclusion.................................................................................................................................13 3. Conducted Emission at AC power line ................................................................................................14 3.1. EUT Operation ..........................................................................................................................14 3.2. Test Setup .................................................................................................................................14 3.3. Test Data ...................................................................................................................................15 4. 6dB Bandwidth ....................................................................................................................................17 4.1. EUT Operation ..........................................................................................................................17 4.2. Test Setup .................................................................................................................................17 4.3. Test Data ...................................................................................................................................17 5. Maximum Conducted Output Power....................................................................................................18 5.1. EUT Operation ..........................................................................................................................18 5.2. Test Setup .................................................................................................................................18 5.3. Test Data ...................................................................................................................................18 6. Power Spectral Density .......................................................................................................................19 6.1. EUT Operation ..........................................................................................................................19 6.2. Test Setup .................................................................................................................................19 6.3. Test Data ...................................................................................................................................19 7. Emissions in non-restricted frequency bands ......................................................................................20 7.1. EUT Operation ..........................................................................................................................20 7.2. Test Setup .................................................................................................................................20 7.3. Test Data ...................................................................................................................................20 8. Band edge emissions (Radiated) ........................................................................................................21 8.1. EUT Operation ..........................................................................................................................21 8.2. Test Setup .................................................................................................................................21 8.3. Test Data ...................................................................................................................................22 9. Emissions in restricted frequency bands (below 1GHz) .................................................................…

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ReportNo.:1812C50535312501-01 Page 1 of 22 AppendixTestData ReportNo.:1812C50535312501-01TestSampleNo.:1-2-2 StartTestDate:2025-10-13FinishTestDate:2025-10-24 TestEngineer:Auditor: Temperature: 24.5°C RelativeHumidity:42% Pressure:101kPa AppendixA:6dBBandwidth TestResult Test Mode AntennaFrequency[MHz] 6dBBW [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict 2.4GAnt124020.5042401.6682402.1720.5PASS 2.4GAnt124400.5242439.6562440.1800.5PASS 2.4GAnt124800.5322479.6602480.1920.5PASS ReportNo.:1812C50535312501-01 Page 2 of 22 TestGraphs 2.4G-Ant1-2402-PASS 2.4G-Ant1-2440-PASS ReportNo.:1812C50535312501-01 Page 3 of 22 2.4G-Ant1-2480-PASS ReportNo.:1812C50535312501-01 Page 4 of 22 AppendixB:99%OccupiedBandwidth TestResult Test Mode AntennaFrequency[MHz] OCB [MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict 2.4GAnt124021.11982401.41362402.5334------ 2.4GAnt124401.14752439.39232440.5398------ 2.4GAnt124801.21162479.32252480.5341------ ReportNo.:1812C50535312501-01 Page 5 of 22 TestGraphs 2.4G-Ant1-2402 2.4G-Ant1-2440 ReportNo.:1812C50535312501-01 Page 6 of 22 2.4G-Ant1-2480 ReportNo.:1812C50535312501-01 Page 7 of 22 AppendixC:Maximumconductedoutputpower TestResultPeak Test Mode Antenna Frequency [MHz] ConductedPeakPower[dBm]ConductedLimit[dBm]Verdict 2.4GAnt124020.98≤20.97PASS 2.4GAnt124401.80≤20.97PASS 2.4GAnt124802.49≤20.97PASS TestGraphsPeak 2.4G-Ant1-2402-PASS ReportNo.:1812C50535312501-01 Page 8 of 22 2.4G-Ant1-2440-PASS 2.4G-Ant1-2480-PASS ReportNo.:1812C50535312501-01 Page 9 of 22 AppendixD:Maximumpowerspectraldensity TestResult TestModeAntennaFrequency[MHz]Result[dBm/3kHz]Limit[dBm/3kHz]Verdict 2.4GAnt12402-18.22≤8.00PASS 2.4GAnt12440-17.39≤8.00PASS 2.4GAnt12480-15.59≤8.00PASS ReportNo.:1812C50535312501-01 Page 10 of 22 TestGraphs 2.4G-Ant1-2402-PASS 2.4G-Ant1-2440-PASS ReportNo.:1812C50535312501-01 Page 11 of 22 2.4G-Ant1-2480-PASS ReportNo.:1812C50535312501-01 Page 12 of 22 AppendixE:Bandedgemeasurements TestResult Test Mode AntennaChName Frequency [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict 2.4GAnt1Low24021.01-48.82≤-18.99PASS 2.4GAnt1High24802.32-48.53≤-17.68PASS Remark:Regardingthespuriousemissionsfrom30MHzto26.5GHz,thecablelosehavebeensetinthe 'offset'oftheSpectrumAnalyzerduringthetest. ReportNo.:1812C50535312501-01 Page 13 of 22 TestGraphs 2.4G-Ant1-2402-PASS 2.4G-Ant1-2480-PASS ReportNo.:1812C50535312501-01 Page 14 of 22 AppendixF:ConductedSpuriousEmission TestResult Test Mode AntennaFrequency[MHz] Freq.Range [MHz] Ref.Level [dBm] Result [dBm] Limit [dBm] Verdict 2.4GAnt124020~Reference3.383.38---PASS 2.4GAnt1240230~10003.38-68.01≤-16.62PASS 2.4GAnt124021000~265003.38-41.66≤-16.62PASS 2.4GAnt124400~Reference1.521.52---PASS 2.4GAnt1244030~10001.52-68.66≤-18.48PASS 2.4GAnt124401000~265001.52-42.28≤-18.48PASS 2.4GAnt124800~Reference1.221.22---PASS 2.4GAnt1248030~10001.22-68.71≤-18.78PASS 2.4GAnt124801000~265001.22-40.94≤-18.78PASS Remark:Regardingthespuriousemissionsfrom30MHzto26.5GHz,thecableloseandattenuator factorshavebeensetinthe'InputCorrection'oftheSpectrumAnalyzerduringthetest. ReportNo.:1812C50535312501-01 Page 15 of 22 TestGraphs 2.4G-Ant1-2402-0~Reference-PASS 2.4G-Ant1-2402-30~1000-PASS ReportNo.:1812C50535312501-01 Page 16 of 22 2.4G-Ant1-2402-1000~26500-PASS 2.4G-Ant1-2440-0~Reference-PASS ReportNo.:1812C50535312501-01 Page 17 of 22 2.4G-Ant1-2440-30~1000-PASS 2.4G-Ant1-2440-1000~26500-PASS ReportNo.:1812C50535312501-01 Page 18 of 22 2.4G-Ant1-2480-0~Reference-PASS 2.4G-Ant1-2480-30~1000-PASS ReportNo.:1812C50535312501-01 Page 19 of 22 2.4G-Ant1-2480-1000~26500-PASS ReportNo.:1812C50535312501-01 Page 20 of 22 AppendixG:DutyCycle TestResult Test Mode Antenna Frequency [MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] 2.4GAnt124020.090.6314.298.45 2.4GAnt124400.090.6314.298.45 2.4GAnt124800.100.6216.137.92 ReportNo.:1812C50535312501-01 Page 21 of 22 TestGraphs NTNV-2.4G-Ant1-2402 NTNV-2.4G-Ant1-2440 ReportNo.:1812C50535312501-01 Page 22 of 22 NTNV-2.4G-Ant1-2480 ---End---

Page 1 of 31 FCC Test Report Report No.:1812C50535312503 Applicant:Dongguan Dareu Electronics Audio Co., LTD Address: No.110, shijie shidan Mid Rd, shijie Town, Dongguan City, Guangdong Province. China Product Name:Headset Report Date:2025-12-02 Shenzhen Anbotek Compliance Laboratory Limited #检测章# #资质章# Report No.:1812C50535312503Page 2 of 31 FCC ID: 2A5PJ-EH925ULTRAH Contents 1. General Information ...............................................................................................................................6 1.1. Client Information ........................................................................................................................6 1.2. Description of Device (EUT) ........................................................................................................6 1.3. Auxiliary Equipment Used During Test........................................................................................7 1.4. Operation channel list..................................................................................................................7 1.5. Description of Test Modes...........................................................................................................7 1.6. Measurement Uncertainty ...........................................................................................................8 1.7. Additional Instructions .................................................................................................................8 1.8. Test Summary .............................................................................................................................9 1.9. Description of Test Facility ........................................................................................................10 1.10. Disclaimer................................................................................................................................10 1.11. Test Equipment List.................................................................................................................11 2. Antenna requirement ...........................................................................................................................13 2.1. Conclusion.................................................................................................................................13 3. Conducted Emission at AC power line ................................................................................................14 3.1. EUT Operation ..........................................................................................................................14 3.2. Test Setup .................................................................................................................................14 3.3. Test Data ...................................................................................................................................15 4. 6dB Bandwidth ....................................................................................................................................17 4.1. EUT Operation ..........................................................................................................................17 4.2. Test Setup .................................................................................................................................17 4.3. Test Data ...................................................................................................................................17 5. Maximum Conducted Output Power....................................................................................................18 5.1. EUT Operation ..........................................................................................................................18 5.2. Test Setup .................................................................................................................................18 5.3. Test Data ...................................................................................................................................18 6. Power Spectral Density .......................................................................................................................19 6.1. EUT Operation ..........................................................................................................................19 6.2. Test Setup .................................................................................................................................19 6.3. Test Data ...................................................................................................................................19 7. Emissions in non-restricted frequency bands ......................................................................................20 7.1. EUT Operation ..........................................................................................................................20 7.2. Test Setup .................................................................................................................................20 7.3. Test Data ...................................................................................................................................20 8. Band edge emissions (Radiated) ........................................................................................................21 8.1. EUT Operation ...…

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