APIENDRACE2BLUETOOTH HEADSET

Harman International Industries, Inc Covered Equipment Certification Attestation Letter 2024-05-29 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID:APIENDRACE2 Harman International Industries, Inc (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List , the applicant should include an explanation on why the equipment is not “covered” equipment. Harman International Industries, Inc (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Terry Shi Title: Senior Prin.Engineer,Regulatory Compliance, Quality Company Name: Harman International Industries, Inc Address: 8500 Balboa Boulevard, Northridge, CA 91329, United States Phone: 86-75523189391 E-Mail: [email protected] Date: 2024-05-29

HarmanInternationalIndustries,Inc HarmanInternationalIndustries,Inc 8500 BalboaBoulevard,Northridge,CA 91329,UnitedStates , Northridge,CA 91329,United States FederalCommunicationCommission Authorizationand EvaluationDivision 7435OaklandMillsRoad Columbia,MD 21046 USA 2024-05-29 AttestationStatementaccordingto 2.911(d)(7) FCC ID: APIENDRACE2 TO WHOMIT MAYCONCERN: We, HarmanInternationalIndustries,Inc designateourselvesto act as U.S. agentfor service of process. HarmanInternationalIndustries,Inc herebyacknowledgesthe obligationof the U.S. agent for serviceof process.FurtherHarmanInternationalIndustries,Inc acceptsto maintainan agentfor no less thanone year afterthe granteehas terminatedall marketingand importationor the conclusionof any Commission-relatedproceedinginvolvingthe equipment. Sincerely Signature: Companyname:HarmanInternationalIndustries,Inc FRN:0024748147 Address:8500BalboaBoulevard,Northridge,CA 91329,UnitedStates ContactPerson:TerryShi TelephoneNo: 86-75523189391 Email:[email protected]

Harman International Industries, Inc 2024-05-29 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 AUTHORITY TO ACT AS AGENT - FCC On our behalf, I appointDamon Hu,Guangdong Dongdian Testing Service Co.,Ltd.( Unit 2, Building 1, No.17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808) , to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in FCC regulations will have affixed to it a label identical to that submitted for approval with this application. In signing this letter, Applicant certifies that neither the applicant nor any party to the application is not subject to a denial of Federal benefits, that include FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. § 862 because of a conviction for possession or distribution of a controlled substance. See 47 CFR 1.2002(b) for the definition of a "party" for these purposes. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America Inc., still residesstill resides with us. Sincerely, Printed name: Terry Shi Title: Senior Prin.Engineer,Regulatory Compliance, Quality Company Name: Harman International Industries, Inc Address: 8500 Balboa Boulevard, Northridge, CA 91329, United States Phone: 86-75523189391 E-Mail: [email protected] Date: 2024-05-29

Harman International Industries, Inc. Product Similarity Declaration 2024-05-29 The product:BLUETOOTH HEADSET Model: ENDURANCE RACE 2 FCC ID:APIENDRACE2 We (Harman International Industries, Inc.) hereby declare that the left side and the right side of the headset using the same RF chip, PCB because of the left and right ear layout needs to be different but does not affect the RF characteristics, so they can use one same FCC ID. Sincerely, Signed : Printed name: Terry Shi Title:Senior Prin.Engineer,Regulatory Compliance, Quality Company Name: Harman International Industries, Inc. Address: 8500 Balboa Boulevard, Northridge, CA 91329, United States Phone: 86-75523189391 E-Mail: [email protected] Date: 2024-05-29

Harman International Industries, Inc 2024-05-29 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY – FCC FCC ID: APIENDRACE2 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules andFCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period ofinsert number of 180 days (cannot exceed 180 days)days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence beforethe requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. ExhibitType of Confidentiality Requested Block Diagrams ☒Permanent ☐Short Term External Photos------------------☒Short Term Internal Photos☐Permanent*☒Short Term Operation Description ☒Permanent ☐Short Term Parts List & Placement/BOM ☐Permanent☐Short Term Tune-Up Procedure ☒Permanent ☐Short Term Schematic Diagrams☒Permanent ☐ Short Term Test Setup Photos------------------☒Short Term User’s Manual ☐ Permanent* ☒Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731and review section II, 3) regarding specific information that must accompany these requests. Note:any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: Terry Shi Title: Senior Prin.Engineer,Regulatory Compliance, Quality Company Name: Harman International Industries, Inc Address: 8500 Balboa Boulevard, Northridge, CA 91329, United States Phone: 86-75523189391 E-Mail: [email protected] Date: 2024-05-29

ShenzhenYushengCommunicationEquipmentCo.,LTD 110 2RACEProjectantennamaterialRequirementsSpecification Customername:GuohengIntelligentTechnology(Huizhou)Co.,LTD Customerproductname:RACE2 Productname:leftheadphoneantenna Productspecification:1LAYERTOUCH+ANTFPCB/LFORJBLENDURANCE RACE,With3MGlueNA Materialcode:100-RACE502A2 Suppliermodel:336040-IA(L)leftheadphoneantenna ChangeContentCV: order number editionstateavailabilitydateperson liable page number remarks 1R:Aeditioprinceps2024-03-20LiJieyi10 TheSupplieracknowledgesthesignatureofthefollowingdocuments: Responsibleperson/dateIQC/Date-Review/DateApproval/Date MD Closeindustrywisdom SuGuanfengZengXianggood RF ChenKehong TheDemanderacknowledgesthesignature(pleasesenditbackaftertheconfirmation): Thedemandertheresult:□qualified□unqualified Development&Design Engineer/Date SQEEngineer/DatePurchasingLeader/DateDevelopmentManager approval/date Room 411, Building 2, South Taiyun Chuanggu Park, Southeast Of The Intersection Of Guangming Avenue And Dongchang Road, Tangwei Community, Fenghuang Street, Guangming Dist., Shenzhen, Guagndong, China ShenzhenYushengCommunicationEquipmentCo.,LTD 210 catalogue 1.OVERVIEW......................................................................................................................................................3 1.1S COPEOFAPPLICATION......................................................................................................................................3 1.2PROJECTBASICINFORMATION...........................................................................................................................3 2.TECHNICALINDEXREQUIREMENTS.....................................................................................................3 2.1I NTRODUCTIONOFTESTITEMSANDEQUIPMENT.............................................................................................3 2.2ACTIVEREPORTING.............................................................................................................................................3 2.2.1T ESTINSTRUCTIONS........................................................................................................................................3 2.2.2ELECTRICALPERFORMANCEPARAMETERS.......................................................................................................4 2.2.3CONDUCTIONDATA.........................................................................................................................................5 2.2.4CIRCUITMATCHINGDIAGRAM.........................................................................................................................5 2.2.5S11..................................................................................................................................................................5 2.2.6ANTENNAOTA...............................................................................................................................................6 2.2.7PULLDISTANCETEST........................................................................................................................................6 2.2.8F IELDTESTDATA..............................................................................................................................................7 3.STRUCTURALDRAWINGS.........................................................................................................................8 3.1DRAWINGOFTHELEFTHEADSETANTENNA......................................................................................................8 4.LISTOFMATERIALS.....................................................................................................................................9 5.PACKAGINGDIAGRAM............................................................................................................................10 (THISFIGUREISONLYAPACKAGINGDIAGRAM,SUBJECTTOTHEACTUALMASSPRODUCTION)...............................10 ShenzhenYushengCommunicationEquipmentCo.,LTD 310 1.Overview 1.1Scopeofapplication Thisrequirementspecifiestheantennatechnicalrequirementsandmaterialrequirementsspecificationsfor RACE2products. Thisrequirementappliestotheselection,testing,andacceptanceoftheRACE2antenna. 1.2Projectbasicinformation Antennaname: RACE2 Antennafrequency: BT：2400-2500MHZ Antennamaterial:FPCantenna Antennaversion: R:A 2.Technicalindexrequirements 2.1Introductionoftestitemsandequipment inventorytestitem equipment ActivetestTRP,TISIntegratedtester,microwavedarkroom 2.2ActiveReporting 2.2.1Testinstructions Testtools:Agilent8960instrument,R&SCMW500,fullwavefarfieldETSdarkroom,highprecisio npositioningsystemanditscontrollerandcomputerwithautomatictestprogram Testenvironment:temperature22 °C± 3 °C ,humidity50% ± 15% Testmethod:DUTisfixedinthecenteroftheturntablewiththeHplane,onthesamehorizontallin easthecenterofthehornantenna. ThepositioningsystemenablestheDUTtorotateinthewholespheretosatisfythehigh-precision3D positioning.EachRFinstrumentandturntablecontrollercommunicatewiththePCwithautomatictestsoftware throughtheGPIBinterface. ShenzhenYushengCommunicationEquipmentCo.,LTD 410 2.2.2,electricalperformanceparameters Productelectricalperformanceindex Operatingfrequencyrange 2400MHz-2500MHz: standing-waveratio 2400MHz-2500MHz:<2.0 antennagain .02400MHz-2500MHz:-2dBi±1dBi radiationefficiency 2400MHz-2500MHz:>20% impedance50ohm Productmaterialdescription FPC Productenvironmentdescription workingtemperature-40 ̊C~+80 ̊C Storagetemperature-40 ̊C~+80 ̊C ShenzhenYushengCommunicationEquipmentCo.,LTD 510 2.2.3Conductiondata L Channelpowersensitivity 08.9-94.0 398.9-94.0 789.1-94.0 2.2.4Circuitmatchingdiagram 2.2.5S11 ShenzhenYushengCommunicationEquipmentCo.,LTD 610 FreqEffiGain (MHz)(%)(dBi) 241017-1.2 242019-1.02 243023-1.33 244024-1.4 245026-1.35 246027-1.4 247025-1.32 248023-1.4 249021-1.52 250018-1.36 2.2.6AntennaOTA LTRP（dBm）TIS（dBm） 03.12-88.25 393.45-88.49 freedom 783.26-88.62 ChannelTRP（dBm）TIS（dBm） 0-…

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ShenzhenYushengCommunicationEquipmentCo.,LTD 110 2RACEProjectantennamaterialRequirementsSpecification Customername:GuohengIntelligentTechnology(Huizhou)Co.,LTD Customerproductname:RACE2 Productname:leftheadphoneantenna Productspecification:1LAYERTOUCH+ANTFPCB/RFORJBLENDURANCE RACE,With3MGlueNA Materialcode:100-RACE503A2 Suppliermodel:336040-IB(R)leftheadsetantenna ChangeContentCV: order number editionstateavailabilitydateperson liable page number remarks 1R:Aeditioprinceps2024-03-20LiJieyi10 TheSupplieracknowledgesthesignatureofthefollowingdocuments: Responsibleperson/dateIQC/Date-Review/DateApproval/Date MD Closeindustrywisdom SuGuanfengZengXianggood RF ChenKehong TheDemanderacknowledgesthesignature(pleasesenditbackaftertheconfirmation): Thedemandertheresult:□qualified□unqualified Development&Design Engineer/Date SQEEngineer/DatePurchasingLeader/DateDevelopmentManager approval/date Room 411, Building 2, South Taiyun Chuanggu Park, Southeast Of The Intersection Of Guangming Avenue And Dongchang Road, Tangwei Community, Fenghuang Street, Guangming Dist., Shenzhen, Guagndong, China ShenzhenYushengCommunicationEquipmentCo.,LTD 210 catalogue 1.OVERVIEW......................................................................................................................................................3 1.1S COPEOFAPPLICATION......................................................................................................................................3 1.2PROJECTBASICINFORMATION...........................................................................................................................3 2.TECHNICALINDEXREQUIREMENTS.....................................................................................................3 2.1I NTRODUCTIONOFTESTITEMSANDEQUIPMENT.............................................................................................3 2.2ACTIVEREPORTING.............................................................................................................................................3 2.2.1T ESTINSTRUCTIONS........................................................................................................................................3 2.2.2,ELECTRICALPERFORMANCEPARAMETERS......................................................................................................4 2.2.3CONDUCTIONDATA.........................................................................................................................................5 2.2.4CIRCUITMATCHINGDIAGRAM.........................................................................................................................5 2.2.5S11..................................................................................................................................................................5 2.2.6ANTENNAOTA...............................................................................................................................................6 2.2.7PULLDISTANCETEST........................................................................................................................................6 2.2.8F IELDTESTDATA..............................................................................................................................................7 3.STRUCTURALDRAWINGS.........................................................................................................................8 3.1DRAWINGOFTHERIGHTHEADSETANTENNA...................................................................................................8 4.LISTOFMATERIALS.....................................................................................................................................9 5.PACKAGINGDIAGRAM............................................................................................................................10 (THISFIGUREISONLYAPACKAGINGDIAGRAM,SUBJECTTOTHEACTUALMASSPRODUCTION)...............................10 ShenzhenYushengCommunicationEquipmentCo.,LTD 310 1.Overview 1.1Scopeofapplication Thisrequirementspecifiestheantennatechnicalrequirementsandmaterialrequirementsspecificationsfor RACE2products. Thisrequirementappliestotheselection,testing,andacceptanceoftheRACE2antenna. 1.2Projectbasicinformation Antennaname: RACE2 Antennafrequency: BT：2400-2500MHZ Antennamaterial:FPCantenna Antennaversion: R:A 2.Technicalindexrequirements 2.1Introductionoftestitemsandequipment inventorytestitem equipment ActivetestTRP,TISIntegratedtester,microwavedarkroom 2.2ActiveReporting 2.2.1Testinstructions Testtools:Agilent8960instrument,R&SCMW500,fullwavefarfieldETSdarkroom,highprecisio npositioningsystemanditscontrollerandcomputerwithautomatictestprogram Testenvironment:temperature22 °C± 3 °C ,humidity50% ± 15% Testmethod:DUTisfixedinthecenteroftheturntablewiththeHplane,onthesamehorizontallin easthecenterofthehornantenna. ThepositioningsystemenablestheDUTtorotateinthewholespheretosatisfythehigh-precision3D positioning.EachRFinstrumentandturntablecontrollercommunicatewiththePCwithautomatictestsoftware throughtheGPIBinterface. ShenzhenYushengCommunicationEquipmentCo.,LTD 410 2.2.2,electricalperformanceparameters Productelectricalperformanceindex Operatingfrequencyrange 2400MHz-2500MHz: standing-waveratio 2400MHz-2500MHz:<2.0 antennagain .02400MHz-2500MHz:-2dBi±1dBi radiationefficiency 2400MHz-2500MHz:>20% impedance50ohm Productmaterialdescription FPC Productenvironmentdescription workingtemperature-40 ̊C~+80 ̊C Storagetemperature-40 ̊C~+80 ̊C ShenzhenYushengCommunicationEquipmentCo.,LTD 510 2.2.3Conductiondata R Channelpowersensitivity 09.0-94.0 399.0-94.0 789.0-94.0 2.2.4Circuitmatchingdiagram 2.2.5S11 ShenzhenYushengCommunicationEquipmentCo.,LTD 610 FreqEffiGain (MHz)(%)(dBi) 241016-0.85 242018-1.01 243022-0.95 244023-1.01 245025-0.88 246027-0.98 247028-1.20 248026-1.30 249023-1.21 250019-1.12 2.2.6AntennaOTA RTRP（dBm）TIS（dBm） 03.32-88.6 freedom 393.56-88.74 783.35-88.6 ChannelTRP（dBm）TIS（dBm） 0-1.…

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Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24022823-2E08 TRF No.: RT-4-E-02-601 FCC SAR Test Report Ver.1.1 Page 1 of 29 FCC AND ISED SAR TEST REPORT Applicant : Harman International Industries, Inc. Address of Applicant : 8500 Balboa Boulevard, Northridge, CA 91329, UNITED STATES Manufacturer : Harman International Industries, Inc. Address of Manufacturer : 8500 Balboa Boulevard, Northridge, CA 91329, UNITED STATES Equipment under Test : BLUETOOTH HEADSET Model No. : ENDURANCE RACE 2 FCC ID : APIENDRACE2 IC : 6132A-JBLENDRACE2 Test Standard(s) : Test Standard Used: IEEE Std. 1528-2013; IEC/IEEE 62209-1528:2020 FCC Rules and Regulations: 47 CFR § 2.1093 ISED Rules and Regulations: RSS-102 Issue5, Mar. 2015 Test Procedure Used: KDB447498 D04 v01, KDB 865664 D01 v01r04, KDB 865664 D02 v01r02 Report No. : DDT-RE24022823-2E08 Issue Date : 2024/05/17 Issue By : Guangdong Dongdian Testing Service Co., Ltd. Address of Laboratory : Unit 2, Building 1, No. 17, Zongbu 2nd Road, Songshan Lake Park, Dongguan, Guangdong, China, 523808 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24022823-2E08 TRF No.: RT-4-E-02-601 FCC SAR Test Report Ver.1.1 Page 2 of 29 Table of Contents 1. General test information ...................................................................................................... 6 1.1. Description of EUT .............................................................................................................. 6 1.2. Accessories of EUT ............................................................................................................. 6 1.3. Assistant equipment used for test ....................................................................................... 6 1.4. Block diagram of EUT configuration for test ....................................................................... 6 1.5. Test environment conditions ............................................................................................... 6 1.6. Test laboratory .................................................................................................................... 7 2. Summary of test results ...................................................................................................... 8 2.1. Report SAR results ............................................................................................................. 8 2.2. RF exposure limits .............................................................................................................. 8 3. SAR measurements system configuration .......................................................................... 9 3.1. The SAR measurement system .......................................................................................... 9 3.2. Isotropic E-field probe EX3DV4 ........................................................................................ 10 3.3. SAM twin phantom ............................................................................................................ 10 3.4. ELI phantom ...................................................................................................................... 11 3.5. Data acquisition electronics (DAE) ................................................................................... 11 3.6. Device holder for transmitters ........................................................................................... 12 4. Measurement procedure ................................................................................................... 13 4.1. Scanning procedure .......................................................................................................... 13 5. Description of test position ................................................................................................ 15 5.1. Body-worn accessory configurations ................................................................................ 15 5.2. Extremity exposure configurations .................................................................................... 16 6. RF exposure conditions .................................................................................................... 17 6.1. EUT Test sides .................................................................................................................. 17 6.2. Standalone SAR test exclusion considerations ................................................................ 17 7. SAR system verification procedure ................................................................................... 19 7.1. Tissue simulate liquid ........................................................................................................ 19 7.1.1. Target dielectric properties of head tissue-equivalent material ........................................ 19 7.1.2. Measurement for tissue simulate liquid ............................................................................ 19 7.2. SAR system validation ...................................................................................................... 21 7.2.1. Justification for extended SAR dipole calibrations ............................................................ 22 7.2.2. Validation test setup photograph ...................................................................................... 22 7.2.3. Summary system validation results .................................................................................. 23 7.2.4. Detailed system validation results ..................................................................................... 23 8. Equipment list .................................................................................................................... 24 9. Measurement uncertainty .................................................................................................. 25 Guangdong Dongdian Testing Service Co., Ltd. Report No.: DDT-RE24022823-2E08 TRF No.: RT-4-E-02-601 FCC S…

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Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 1 of 3 Appendix A System Validation Plots Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 2 of 3 Table of Contents 1. D2450V2-SN: 904 Validation Plot ..................................................................................... 3 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 3 of 3 1. D2450V2-SN: 904 Validation Plot

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 1 of 4 Appendix B Highest Test Plots Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 2 of 4 Table of Contents 1. BT Head-worn 0mm SAR ....................................................................................................... 3 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 3 of 4 1. BT Head-worn 0mm SAR Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 4 of 4

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 1 of 30 Appendix C Calibration Certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 2 of 30 Table of Contents 1. D2450V2-SN: 904 Calibration certification ............................................................................. 3 2. D5GHzV2-SN: 1148 Calibration certification .......................................................................... 9 3. DAE4-SN: 1366 Calibration certification............................................................................... 19 4. EX3DV4-SN: 3906 Calibration certification .......................................................................... 22 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 3 of 30 1. D2450V2-SN: 904 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 4 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 5 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 6 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 7 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 8 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 9 of 30 2. D5GHzV2-SN: 1148 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 10 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 11 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 12 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 13 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 14 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 15 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 16 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 17 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 18 of 30

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 19 of 30 3. DAE4-SN: 1366 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 20 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 21 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 22 of 30 4. EX3DV4-SN: 3906 Calibration certification Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 23 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 24 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 25 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 26 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 27 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 28 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 29 of 30 Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 30 of 30

Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 1 of 8 Appendix D Test setup photograph Guangdong Dongdian Testing ServiceCo.,Ltd. Report No.: DDT-RE24022823-2E08 Page 2 of 8 Table of Contents 1. 2.4G Tissue Head-worn Photograph .…

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