2BMXK-EAUES204NOISEZERO HEADPHONES

RF Exposure Information The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

ReportNo.:BTEK250927003A01E01 Page: 1 of 4 Appendix EUTPhotos forBTEK250927003A01E01 ReportNo.:BTEK250927003A01E01 Page: 2 of 4 EUTConstructionalDetails(EUTPhotos) EUTView7 EUTView8 EUTView9 FPCAntennaFPCAntenna ReportNo.:BTEK250927003A01E01 Page: 3 of 4 EUTView10 EUTView10 EUTView11 ReportNo.:BTEK250927003A01E01 Page: 4 of 4 EUTView13 EUTView14

Report No.: BTEK250927003A01E01 Page: 1 of 2 Appendix Setup Photos For BTEK250927003A01E01 Report No.: BTEK250927003A01E01 Page: 2 of 2 Radiated Spurious Emissions (Below 1GHz) Radiated Spurious Emissions (Above 1GHz) Conducted Emission

1st ConfirmationofSample 样品承认书 TheMainAntennaSampleConfirmation Customer DongguanYinquTechnologyCo.,LTD ProjectName SN-B204-R-V06 Date 2025-4-11 ProjectNO. SN1219Notes FPCantenna+touch FrequencyRange 2400-2500MHz Designer：SINAWELLElectronics(Shenzhen)Co.,Ltd. Add：712-717,BlockAJinfulaiBuilding,49-1DabaoRoad,Xinan28 th area,BaoanDistrict,Shenzhen,China ConfirmationofSample 样品承认书 2nd TableofContents 1.Specificationdescription ............................................................................................. 1 2.Antennaappearance ........................................................................................................... 3 3.Electricalperformance ................................................................................................... 3 3.1.Antennaband .............................................................................................................. 3 3.2.Matchingcircuit ..................................................................................................... 3 3.3.ReturnLoss ................................................................................................................ 4 AppendixI(Mechanicaldrawing) ..................................................................................... 5 AppendixII(PerformanceReport) ........................................................................... 6、7 ConfirmationofSample 样品承认书 1.Specificationdescription ThisspecificationdescribesthestatusoftheB204-Rinternalantennawitha frequencybandofBT. 2.Antennaappearance 3.Electricalperformance 3.1.Antennaband BT Transmitting band(MHz) 2400MHz-2500MHz 3.2.MatchingCircuit Afterthetestpointisattheantennaconnector(RFtestport),seethefigurebelow. 1.WIFIantennamatching 。 ElementValue E1(0402)2.4PF E2(0402)0Ohm E3(0402)NC E4(0402)NC 3rd 4th ConfirmationofSample 样品承认书 3.3.ReturnLoss ConfirmationofSample 样品承认书 5th Appendix1:StructuralDrawing ConfirmationofSample 样品承认书 6th Appendix2:3DTestReport Antennapassivetestdata R Freq (MHz) Effi (%) Effi (dB) Gain (dBi) 240020.28-6.93-3.66 241020.8-6.82-3.61 242021.05-6.77-3.7 243021.64-6.65-3.81 244020.31-6.92-4.04 245017.63-7.54-4.73 246016.79-7.75-5.06 247015.99-7.96-5.1 248015.41-8.12-4.89 249014.38-8.42-4.94 250012.74-8.95-5.6 Antennaactivetestdata BAND CHANNELTRP TIS BT 0 5.35-84.29 39 6.25-86.32 78 6.02-87.08 7th ConfirmationofSample 样品承认书 Fieldintensitypattern

1st ConfirmationofSample 样品承认书 TheMainAntennaSampleConfirmation Customer DongguanYinquTechnologyCo.,LTD ProjectName SN-B204-L-V6 Date 2025-4-11 ProjectNO. SN1204 Notes FPCantenna+touch FrequencyRange 2400-2500MHz Designer：SINAWELLElectronics(Shenzhen)Co.,Ltd. Add：712-717,BlockAJinfulaiBuilding,49-1DabaoRoad,Xinan28 th area,BaoanDistrict,Shenzhen,China ConfirmationofSample 样品承认书 2nd TableofContents 1.Specificationdescription ............................................................................................. 1 2.Antennaappearance ........................................................................................................... 3 3.Electricalperformance ................................................................................................... 3 3.1.Antennaband .............................................................................................................. 3 3.2.Matchingcircuit ..................................................................................................... 3 3.3.ReturnLoss ................................................................................................................ 4 AppendixI(Mechanicaldrawing) ..................................................................................... 5 AppendixII(PerformanceReport) ........................................................................... 6、7 ConfirmationofSample 样品承认书 3rd 1.Specificationdescription ThisspecificationdescribesthestatusoftheB204-Linternalantennawitha frequencybandofBT. 2.Antennaappearance 3.Electricalperformance 3.1.Antennaband BT Transmitting band(MHz) 2400MHz-2500MHz 3.2.MatchingCircuit Afterthetestpointisattheantennaconnector(RFtestport),seethefigurebelow. 1.WIFIantennamatching 。 ElementValue E1(0402)2.4PF E2(0402)0Ohm E3(0402)NC E4(0402)NC 4th ConfirmationofSample 样品承认书 3.3.ReturnLoss ConfirmationofSample 样品承认书 5th Appendix1:StructuralDrawing ConfirmationofSample 样品承认书 6th Appendix2:3DTestReport Antennapassivetestdata Freq (MHz) L Effi (dB) Gain (dBi) Effi (%) 240017.26-7.63-3.83 241018.77-7.26-3.29 242019.11-7.19-3.08 243020.08-6.97-2.64 244019.51-7.1-2.54 245018-7.45-2.77 246017.74-7.51-2.72 247017.59-7.55-2.77 248017.31-7.62-3.02 249016.03-7.95-3.5 250014.61-8.35-3.94 Antennaactivetestdata BANDCHANNELTRP TIS BT 0 3.37-84 39 5.24-86.97 78 5.78-87.39 7th ConfirmationofSample 样品承认书 Fieldintensitypattern

ReportNo.:BTEK250927003A01E01-01 Page: 1 of 38 TESTREPORT ApplicationNo.:BTEK250927003A01E01 Applicant:IAISMARTINC AddressofApplicant:20TroyRoad,Suite2WhippanyNJ07981 Manufacturer:IAISMARTINC AddressofManufacturer:20TroyRoad,Suite2WhippanyNJ07981 Factory:DongguanYinquTechnologyCo,Ltd AddressofFactory:Room201,Building1,No.65ZhengweiFourthRoad,Dongkeng Town.DongguanCity EquipmentUnderTest(EUT): EUTName:NOISEZEROHEADPHONES TestModel.:ES204 AddingModel(s):EAUES204BL,EAUES204WH TradeMark:EMERSON FCCID:2BMXK-EAUES204 Standard(s): 47CFRPart15,SubpartC15.247 KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10:2020 DateofReceiptSample(s): 2025-10-17 DateofTest: 2025-10-17to2025-10-23 DateofIssue: 2025-11-07 TestResult: Pass* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. AlexWang/Approved&Authorized EMCLaboratoryManager ReportNo.:BTEK250927003A01E01-01 Page: 2 of 38 RevisionRecord VersionIssueDateRevisionsRemarks V02025-11-07InitialValid Authorizedforissueby: KarlLiu/FileEditor JuneLi/Reviewer Remarks: Theresultsshowninthistestreportreferonlytothesample(s)tested,thistestreportcannotbe reproduced,exceptinfullwithoutpriorwrittenpermissionofthecompany.Thereportwouldbeinvalidwithout specificstampoftestinstituteandthesignaturesofcompilerandapprover. ReportNo.:BTEK250927003A01E01-01 Page: 3 of 38 2TestSummary RadioSpectrumTechnicalRequirement StandardItemMethodRequirementResult 47CFRPart15, SubpartC15.247 AntennaRequirementN/A 47CFRPart15,Subpart C15.203&15.247(b)(4) Pass OtherrequirementsFrequency HoppingSpreadSpectrum SystemHoppingSequence N/A 47CFRPart15,Subpart C15.247(a)(1),(g),(h) Pass RadioSpectrumMatterPart StandardItemMethodRequirementResult 47CFRPart15, SubpartC15.247 ConductedEmissionsatAC PowerLine(150kHz-30MHz) ANSIC63.10(2020) Section6.2 47CFRPart15, SubpartC15.207 Pass ConductedPeakOutputPower ANSIC63.10(2020) Section7.8.5 47CFRPart15, SubpartC15.247(b)(1) Pass 20dBBandwidth ANSIC63.10(2020) Section7.8.6 47CFRPart15,Subpart C15.247(a)(1) Pass CarrierFrequencies Separation ANSIC63.10(2020) Section7.8.2 47CFRPart15,Subpart C15.247a(1) Pass HoppingChannelNumber ANSIC63.10(2020) Section7.8.3 47CFRPart15,Subpart C15.247a(1)(iii) Pass DwellTime ANSIC63.10(2020) Section7.8.4 47CFRPart15,Subpart C15.247a(1)(iii) Pass ConductedBandEdges Measurement ANSIC63.10(2013) Section7.8.7 47CFRPart15,Subpart C15.247(d) Pass ConductedSpurious Emissions ANSIC63.10(2020) Section7.8.7 47CFRPart15,Subpart C15.247(d) Pass RadiatedEmissionswhichfall intherestrictedbands ANSIC63.10(2020) Section7.8.8 47CFRPart15,Subpart C15.205&15.209 Pass RadiatedSpuriousEmissions ANSIC63.10(2020) Section6.36.4,6.5,6.6 47CFRPart15,Subpart C15.205&15.209 Pass ReportNo.:BTEK250927003A01E01-01 Page: 4 of 38 3Contents Page 1CoverPage......................................................................................................................................................................1 2TestSummary.................................................................................................................................................3 3Contents..........................................................................................................................................................4 4GeneralInformation........................................................................................................................................6 4.1DetailsofE.U.T.......................................................................................................................................................6 4.2EUTTestModeandTestCondition.....................................................................................................................6 4.3DescriptionofSupportUnits..................................................................................................................................6 4.4MeasurementUncertainty......................................................................................................................................7 4.5TestLocation...........................................................................................................................................................7 4.6DeviationfromStandards......................................................................................................................................7 4.7AbnormalitiesfromStandardConditions.............................................................................................................7 5EquipmentList................................................................................................................................................8 6RadioSpectrumTechnicalRequirement...................................................................................................10 6.1AntennaRequirement...........................................................................................................................................10 6.1.1TestRequirement:........................................................................................................................................10 6.1.2Conclusion.....................................................................................................................................................10 6.2OtherrequirementsFrequencyHoppingSpreadSpectrumSystemHoppingSequence.........................11 6.2.1TestRequirement:........................................................................................................................................11 6.2.2Conclusion.....................................................................................................................................................12 7RadioSpectrumMatterTestResults..........................................................................................................13 7.1ConductedEmissionsatACPowerLine(150kHz-30MHz).........................................................................…

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Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 1 / 54 RF Test Report For BTEK250927003A01E01 Project No.: BTEK250927003A01E01-01 Product Description: 24.9°C, 53%, 101.9kPa Test Engineer: Zora Test Date: 2025-10-17 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 2 / 54 Test Summary Item Result Bandwidth Pass Maximum Conducted Output Power Pass Carrier Frequency Separation Pass Number of Hopping Frequencies Pass Time of Occupancy (Dwell Time) Pass Unwanted Emissions In Non-restricted Frequency Bands Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 3 / 54 1. Bandwidth 1.1 Test Result 1.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.857 / Pass 2441 DH5 1 0.861 / Pass 2480 DH5 1 0.860 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.186 / Pass 2441 2DH5 1 1.177 / Pass 2480 2DH5 1 1.179 / Pass 8DPSK SISO 2402 3DH5 1 1.189 / Pass 2441 3DH5 1 1.182 / Pass 2480 3DH5 1 1.180 / Pass 1.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.956 / Pass 2441 DH5 1 0.956 / Pass 2480 DH5 1 0.951 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.322 / Pass 2441 2DH5 1 1.327 / Pass 2480 2DH5 1 1.316 / Pass 8DPSK SISO 2402 3DH5 1 1.311 / Pass 2441 3DH5 1 1.303 / Pass 2480 3DH5 1 1.306 / Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 4 / 54 1.2 Test Graph 1.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 5 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 6 / 54 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 7 / 54 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 8 / 54 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 9 / 54 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 10 / 54 1.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 11 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 12 / 54 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 13 / 54 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 14 / 54 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 15 / 54 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 16 / 54 2. Maximum Conducted Output Power 2.1 Test Result 2.1.1 Power Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 4.43 <=30 Pass 2441 DH5 3.99 <=30 Pass 2480 DH5 3.99 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 6.92 <=20.97 Pass 2441 2DH5 6.49 <=20.97 Pass 2480 2DH5 6.54 <=20.97 Pass 8DPSK SISO 2402 3DH5 7.27 <=20.97 Pass 2441 3DH5 6.87 <=20.97 Pass 2480 3DH5 6.89 <=20.97 Pass Note1: Antenna Gain: Ant1: -3.61 dBi; Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 17 / 54 2.2 Test Graph 2.2.1 Power GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 18 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 19 / 54 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 20 / 54 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 21 / 54 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 22 / 54 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 23 / 54 3. Carrier Frequency Separation 3.1 Test Result 3.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.000 0.956 >=0.956 Pass Pi/4DQPSK SISO HOPP 2DH5 1.001 1.327 >=0.885 Pass 8DPSK SISO HOPP 3DH5 1.008 1.311 >=0.874 Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 24 / 54 3.2 Test Graph 3.2.1 Ant1 GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 25 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 26 / 54 8DPSK_3DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 27 / 54 4. Number of Hopping Frequencies 4.1 Test Result 4.1.1 HoppNum Mode TX Type Frequency (MHz) Packet Type Num of Hopping Frequencies Verdict ANT1 Limit GFSK SISO HOPP DH5 79 >=15 Pass Pi/4DQPSK SISO HOPP 2DH5 79 >=15 Pass 8DPSK SISO HOPP 3DH5 79 >=15 Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 28 / 54 4.2 Test Graph 4.2.1 HoppNum GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 29 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 30 / 54 8DPSK_3DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 31 / 54 5. Time of Occupancy (Dwell Time) 5.1 Test Result 5.1.1 Ant1 Ant1 Mode TX Type Frequ…

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Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 1 / 54 RF Test Report For BTEK250927003A01E01 Project No.: BTEK250927003A01E01-01 Product Description: 24.9°C, 53%, 101.9kPa Test Engineer: Zora Test Date: 2025-10-17 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 2 / 54 Test Summary Item Result Bandwidth Pass Maximum Conducted Output Power Pass Carrier Frequency Separation Pass Number of Hopping Frequencies Pass Time of Occupancy (Dwell Time) Pass Unwanted Emissions In Non-restricted Frequency Bands Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 3 / 54 1. Bandwidth 1.1 Test Result 1.1.1 OBW Mode TX Type Frequency (MHz) Packet Type ANT 99% Occupied Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.871 / Pass 2441 DH5 1 0.863 / Pass 2480 DH5 1 0.857 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.182 / Pass 2441 2DH5 1 1.179 / Pass 2480 2DH5 1 1.181 / Pass 8DPSK SISO 2402 3DH5 1 1.185 / Pass 2441 3DH5 1 1.181 / Pass 2480 3DH5 1 1.183 / Pass 1.1.2 20dB BW Mode TX Type Frequency (MHz) Packet Type ANT 20dB Bandwidth (MHz) Verdict Result Limit GFSK SISO 2402 DH5 1 0.954 / Pass 2441 DH5 1 0.955 / Pass 2480 DH5 1 0.956 / Pass Pi/4DQPSK SISO 2402 2DH5 1 1.321 / Pass 2441 2DH5 1 1.311 / Pass 2480 2DH5 1 1.330 / Pass 8DPSK SISO 2402 3DH5 1 1.305 / Pass 2441 3DH5 1 1.307 / Pass 2480 3DH5 1 1.308 / Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 4 / 54 1.2 Test Graph 1.2.1 OBW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 5 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 6 / 54 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 7 / 54 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 8 / 54 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 9 / 54 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 10 / 54 1.2.2 20dB BW GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 11 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 12 / 54 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 13 / 54 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 14 / 54 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 15 / 54 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 16 / 54 2. Maximum Conducted Output Power 2.1 Test Result 2.1.1 Power Mode TX Type Frequency (MHz) Packet Type Maximum Peak Conducted Output Power (dBm) Verdict ANT1 Limit GFSK SISO 2402 DH5 4.34 <=30 Pass 2441 DH5 3.92 <=30 Pass 2480 DH5 3.94 <=30 Pass Pi/4DQPSK SISO 2402 2DH5 6.93 <=20.97 Pass 2441 2DH5 6.42 <=20.97 Pass 2480 2DH5 6.48 <=20.97 Pass 8DPSK SISO 2402 3DH5 7.28 <=20.97 Pass 2441 3DH5 6.86 <=20.97 Pass 2480 3DH5 6.88 <=20.97 Pass Note1: Antenna Gain: Ant1: -2.54 dBi; Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 17 / 54 2.2 Test Graph 2.2.1 Power GFSK_DH5_LCH_2402MHz_Ant1_NTNV GFSK_DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 18 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 19 / 54 GFSK_DH5_HCH_2480MHz_Ant1_NTNV Pi/4DQPSK_2DH5_LCH_2402MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 20 / 54 Pi/4DQPSK_2DH5_MCH_2441MHz_Ant1_NTNV Pi/4DQPSK_2DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 21 / 54 8DPSK_3DH5_LCH_2402MHz_Ant1_NTNV 8DPSK_3DH5_MCH_2441MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 22 / 54 8DPSK_3DH5_HCH_2480MHz_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 23 / 54 3. Carrier Frequency Separation 3.1 Test Result 3.1.1 Ant1 Ant1 Mode TX Type Frequency (MHz) Packet Type Channel Separation (MHz) 20dB Bandwidth (MHz) Limit (MHz) Verdict GFSK SISO HOPP DH5 1.000 0.956 >=0.956 Pass Pi/4DQPSK SISO HOPP 2DH5 1.001 1.330 >=0.887 Pass 8DPSK SISO HOPP 3DH5 1.015 1.308 >=0.872 Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 24 / 54 3.2 Test Graph 3.2.1 Ant1 GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 25 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 26 / 54 8DPSK_3DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 27 / 54 4. Number of Hopping Frequencies 4.1 Test Result 4.1.1 HoppNum Mode TX Type Frequency (MHz) Packet Type Num of Hopping Frequencies Verdict ANT1 Limit GFSK SISO HOPP DH5 79 >=15 Pass Pi/4DQPSK SISO HOPP 2DH5 79 >=15 Pass 8DPSK SISO HOPP 3DH5 79 >=15 Pass Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 28 / 54 4.2 Test Graph 4.2.1 HoppNum GFSK_DH5_HOPP_Ant1_NTNV Pi/4DQPSK_2DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 29 / 54 Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 30 / 54 8DPSK_3DH5_HOPP_Ant1_NTNV Shenzhen BANTEK Testing Co., Ltd. Report No.: BTEK250927003A01E01-01 Page 31 / 54 5. Time of Occupancy (Dwell Time) 5.1 Test Result 5.1.1 Ant1 Ant1 Mode TX Type Frequ…

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Report No.: BTEK250927003A01E01-02 Page: 1 of 5 TEST REPORT Application No.: BTEK250927003A01E01 Applicant: IAI SMART INC Address of Applicant: 20 Troy Road, Suite 2 Whippany NJ 07981 Manufacturer: IAI SMART INC Address of Manufacturer: 20 Troy Road, Suite 2 Whippany NJ 07981 Factory: Dongguan Yinqu Technology Co,Ltd Address of Factory: Room 201, Building 1, No.65 Zhengwei Fourth Road, Dongkeng Town.Dongguan City Equipment Under Test (EUT): EUT Name: NOISEZERO HEADPHONES Test Model.: ES204 Adding Model(s): EAUES204BL, EAUES204WH Trade Mark: EMERSON FCC ID: 2BMXK-EAUES204 Standard(s) : 47 CFR Part 2 Subpart J Section 2.1093 447498 D01 General RF Exposure Guidance v06 Date of Receipt Sample(s): 2025-10-17 Date of Test: 2025-10-17 to 2025-10-23 Date of Issue: 2025-11-07 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. Alex Wang / Approved & Authorized EMC Laboratory Manager Report No.: BTEK250927003A01E01-02 Page: 2 of 5 Revision Record Version Issue Date Revisions Remarks V0 2025-11-07 Initial Valid Authorized for issue by: Karl Liu / File Editor June Li/Reviewer Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Report No.: BTEK250927003A01E01-02 Page: 3 of 5 2 Contents Page 1 Cover Page ...................................................................................................................................................... 1 2 Contents .......................................................................................................................................................... 3 3 General Information ....................................................................................................................................... 4 3.1 Details of E.U.T. ........................................................................................................................................ 4 3.2 Description of Support Units ..................................................................................................................... 4 3.3 Test Location ............................................................................................................................................. 4 3.4 Deviation from Standards .......................................................................................................................... 4 3.5 Abnormalities from Standard Conditions .................................................................................................. 4 4 Test Requirement ........................................................................................................................................... 5 4.1Assessment Result..................................................................................................................................... 5 Report No.: BTEK250927003A01E01-02 Page: 4 of 5 3 General Information 3.1 Details of E.U.T. Power supply: Earbuds charger case battery:3.7V⎓600mAh 2.22Wh Headset battery: 3.7V⎓60mAh 0.222Wh Type-C Input: 5V⎓1A 5W Frequency Range: 2402MHz to 2480MHz Bluetooth Version: V5.4 classic Modulation Type: GFSK, π/4DQPSK, 8DPSK Number of Channels: 79 Channel Spacing: 1MHz Antenna Type: FPC Antenna Antenna Gain: Left ear: -2.54dBi Right ear: -3.61dBi Sample No.: BTEK250927003A01E01-1-1/1 Model(s) Difference Statement Single Model. Multi-Models:ES204, EAUES204BL, EAUES204WH Only the model ES204 was tested. According to the declaration from the applicant, the electrical circuit design, layout, components used, internal wiring and functions of other models are identical for the above models, with only difference on Model No 3.2 Description of Support Units Description Manufacturer Model No. Serial No. / / / / 3.3 Test Location All tests were performed at: Shenzhen BANTEK Testing Co., Ltd., A5&A6, Building B1&B2, No.45 Gangtou Road, Bogang Community, Shajing Street, Bao'an District, Shenzhen, Guangdong, China 518103 Tel:0755-2334 4200 Fax: 0755-2334 4200 FCC Registration Number: 264293 Designation Number: CN1356 No tests were sub-contracted. 3.4 Deviation from Standards None 3.5 Abnormalities from Standard Conditions None Report No.: BTEK250927003A01E01-02 Page: 5 of 5 4 Test Requirement KDB447498 D01 General RF Exposure Guidance v06, Clause 4.3.1(b) [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] • [√f(GHz)] ≤ 3.0 Where -f(GHz) is the RF channel transmit frequency in GHz -Power and distance are rounded to the nearest mW and mm before calculation -The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm, and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 4.1 f) is applied to determine SAR test exclusion. 4.1Assessment Result Passed Not Applicable Type Frequency (MHz) Conducted Power (dBm) Maximum Tune-up (dBm) Calculating data Limit Result BT（LEFT） 2402 7.28 7.5 1.74 3.0 Pass BT（RIGHT） 2402 7.27 7.5 1.74 3.0 Pass Note: The exposure evaluation safety distance is 5mm. - End of the Report -

Rev1/26/2023 IAISMARTINC FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:11-24-2025 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BMXK--EAUES204 [IAISMARTINC](“theapplicant”)certifiesthattheequipmentforwhichauthorizationissoughtisnot “covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903of theFCCrules. [IAISMARTINC](“theapplicant”)certifiesthattheequipmentforwhichauthorizationissoughtdoesnot includecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.oranyofits successorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, JasonJiang Rev1/26/2023 IAISMARTINC FederalCommunicationsCommission Autho…

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