2AXPW-MD033True Wireless Stereo Earphones

MD033 -English:" ThisdevicecomplieswithIndustryCanadalicence-exemptRSSstandard(s). Operationissubjecttothefollowingtwoconditions: (1)thisdevicemaynotcauseinterference,and (2)thisdevicemustacceptanyinterference,includinginterferencethat maycauseundesiredoperationofthedevice." -French:" LeprésentappareilestconformeauxCNRd'IndustrieCanadaapplicables auxappareilsradioexemptsdelicence.L'exploitationestautorisée auxdeuxconditionssuivantes: (1)l'appar eilnedoitpasproduiredebrouillage,et (2)l'utilisateurdel'appareildoitacceptertoutbrouillageradioélectriquesubi, mêmesilebrouillageestsusceptibled'encompromettrele fonctionnement." L'appareil a été évalué pour répondre aux exigences générales d'exposition aux RF. L'appareil peut être utilisé sans restriction dans des conditions d'exposition portables. RF warning statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. FCC STATEMENT : This device complie s with Part 15 of the FCC Rules. Operation is subject to the fo llowing two conditions: This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. Warning: Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. RF warning statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. FCC ID:2AXPW-MD033 IC:30259-MD033 HVIN:MD033 FCC ID:2AXPW-MD033 IC:30259-MD033 HVIN:V90

-ShenzhenMoldullAcousticTechnologyCo.,Ltd.- TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotifytheFCCwithin30daysvia thegrantingTCB. FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 7/31/23 U.S.AgentDesignation [ShenzhenMoldullAcousticTechnologyCo.,Ltd.]acknowledgestheirconsentforthefollowingcontact locatedintheUnitedStatestoactastheiragentforserviceofprocessfortheequipmentforwhich authorizationissought(FCCID:[2AXPW-MD033]): NameandcompanyofU.S.agent:LinkwldLLC PhysicalU.S.addressofagent:1942BroadwaySt.STE314C,Boulder,CO,80302,US FRNofU.S.agent:0033625682 EmailaddressofU.S.agent:[email protected] [LinkwldLLC]acknowledgestheirobligationtoacceptserviceofprocessonbehalfof[Shenzhen MoldullAcousticTechnologyCo.,Ltd.]. [ShenzhenMoldullAcousticTechnologyCo.,Ltd.]withtheFRN[0030234173]acceptsitsobligationto maintainanagentforserviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthe granteehaspermanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithin theU.S.,ortheconclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolving theequipment,whicheverislater. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirements listedunder§2.911(d)(7). Sincerely, Signature [Name]Yifengzhang [Title]Manager [Company]ShenzhenMoldullAcousticTechnologyCo.,Ltd. 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 4 -ShenzhenMoldullAcousticTechnologyCo.,Ltd.- TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotifytheFCCwithin30daysvia thegrantingTCB. Signature [NameofU.S.agent]TimothyZhu [TitleofU.S.agent]Manager [CompanyofU.S.agent]LinkwldLLC

C5266091_X24_Ed.2 1/1 “AttestationStatements” TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 TheCommissionadoptedrulesthatprohibitequipmentauthorizationfor“covered” telecommunicationsequipmentandvideosurveillanceequipmentproducedbyentitiesidentified ontheCommission’sCoveredList 1 ,whichisperiodicallyupdated.SeetheCoveredListformore details.ThisAttestationStatementistoconfirmthatwefollowtheSection2.911(d)(5)(i)-(ii) Applicant Companyname:ShenzhenMoldullAcousticTechnologyCo.,Ltd. Granteecode:2AXPW FCCID:2AXPW-MD033 ContactName:YifengZhang Address:403HuiyiWealthCenterNo.9,ZhongxinRoad,DalangLonghuaNewArea, ShenzhenCity,GuangdongProvince,China TelephoneNo:13424221530 FaxNo:+86755-21083934 Email:[email protected] i.[ShenzhenMoldullAcousticTechnologyCo.,Ltd.]certifiesthattheequipmentfor whichauthorizationissoughtisnot“covered”equipmentprohibitedfrom receivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Theapplicantmustsignthiscertification. ii.[ShenzhenMoldullAcousticTechnologyCo.,Ltd.]certifiesthat,asofthedateof thefilingoftheapplication,theapplicant[isnot](asaspecificallynamed entityoranyofitssubsidiariesoraffiliates)identifiedontheCoveredListas anentityproducing“covered”equipment.Theapplicantmustsignthis certification. [ShenzhenMoldullAcousticTechnologyCo.,Ltd.]certifiesthat,asofthedateofthefiling oftheapplication,theapplicant[isnot]identifiedontheCoveredListasanentity producing“covered”equipment. Date:2023-08-11 Applicant’sName:YifengZhang Title:CEO Signature 1 TheCommission’sCoveredListispublishedbythePublicSafetyandHomelandSecurityBureauandpostedonthe Commission’swebsite.ThisCoveredList,whichisperiodicallyupdated,identifiesparticularequipment,producedby particularentities,thatconstitutes“covered”equipment.https://www.fcc.gov/supplychain/coveredlist

ShenzhenMoldullAcousticTechnologyCo.,Ltd. DeclarationonModelDifferences We, ShenzhenMoldullAcousticTechnologyCo.,Ltd. 403HuiyiWealthCenterNo.9,ZhongxinRoad,DalangLonghuaNewArea,Shenzhen City,GuangdongProvince,China Declarethatthefollowingproduct(s): FCCID:2AXPW-MD033 ProductName:TrueWirelessStereoEarphones ModelNo.:MD033,MD038,V90,YT18 Utilizetheidenticalcircuitdesign,PCBlayout,shieldingandinterfacewith(MD033),For modelsdifferences: ModelMD033andMD038aredifferenceinappearancecolor, ModelMD033andV90aredifferenceinmodelname; ModelMD038andYT18aredifferenceinmodelname; Thereforethisapplicationcanberegardedasidenticalinperformancetothesubmittedtest sample. Themanufacturerwouldtakealltheresponsibilitiesfortheaboveproduct(s). Forandonbehalfof Authorizedperson Name:YifengZhang Position:CEO Dateofissue:8/18/2023 *IherebydeclarethatIamentitledtosignonbehalfoftheapplicantandthattheinformationsuppliediscorrectandcomplete.

C5266091_X8_Ed.1 1/1 LetterofAuthorization ShenzhenMoldullAcousticTechnologyCo.,Ltd. Company:ShenzhenMoldullAcousticTechnologyCo.,Ltd. Address:403HuiyiWealthCenterNo.9,ZhongxinRoad,Dalang LonghuaNewArea,ShenzhenCity,GuangdongProvince,China ProductName:TrueWirelessStereoEarphones ModelNumber:MD033,MD038,V90,YT18 FCCIdentifier:2AXPW-MD033 WeauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdelCarme,s/n, 08193Bellaterra,Spain,toactonourbehalfonallmattersconcerningthe abovenamedequipment. AnyindividualwithinLGAITechnologicalCenterS.A.isauthorizedtoactonour behalfandtakeactionontheapplication. WedeclarethatauthorizeLGAITechnologicalCenterS.A.,RondadelaFontdel Carme,s/n,08193Bellaterra,Spain,isallowedtoforwardallinformation relatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.Anyandallacts carriedoutbyLGAITechnologicalCenterS.A.onourbehalfshallhavethe sameeffectasactsofourown. Name:YifengZhangDate:2023-08-11 Title:CEO Signatureofapplicant:

C5266091_X10_Ed.2 1/1 ShenzhenMoldullAcousticTechnologyCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2023-08-11 Subject:RequestforConfidentiality FCCID:2AXPW-MD033 ToWhomItMayConcern, PursuanttotheprovisionsofSections0.457and0.459ofCommission'srules (47CFR0.457,0.459),wearerequestingtheCommissiontowithholdthefollowing attachment(s)asconfidentialdocumentfrompublicdisclosure. ExhibitsLong-Term Confidentiality Short-Term Confidentiality NOTE2 IDLabel/LocationNoNo AttestationStatementNoNo ExternalPhotosNo ☐ BlockDiagram ☒☐ Schematics ☒☐ TestReportNoNo TestSetupPhotosNo ☐ User’sManual ☐ NOTE 1 ☐ InternalPhotos ☐ NOTE 1 ☐ PartsList/TuneUp ☐☐ RFExposureInfoNoNo OperationalDescription ☒☐ CoverLetter(s)NoNo SDRSoftware/SecurityInfo ☐ No NOTE1:Long-TermConfidentialitymaybepermittedunderspecialconditions(SeeII.LONG-TERMCONFIDENTIALITY,Section3of KDB726920,uselastinforce) NOTE2:Short-TermConfidentialitycanberequestedforamaximumof180daysfromthedateofthegrant. Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionare consideredasproprietaryinformationinoperationoftheequipment.Thepublic disclosureofabovedocumentsmightbeharmfultoourcompanyandwouldgive competitoranunfairadvantageinthemarket. Incaseofshort-termConfidentiality,theapplicantrequeststheexhibitsselected abovearewithheldfrompublicviewforaperiodof__/__daysfromthedateofthe GrantofEquipmentAuthorizationandpriortomarketing. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondentduringcertificationreviewprocesscannotbegrantedasconfidential documentsandthoseinformationwillbeavailableforpublicreviewoncethegrantof equipmentauthorizationisissued. C5266091_X10_Ed.2 1/1 Sincerely, Signature: Name:YifengZhang Title:CEO

ProjectNo.:18220WC301473Page1of11 Code:AB-RF-05-b AppendixII--ExternalPhotograph Models:MD033,V90 ProjectNo.:18220WC301473Page2of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page3of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page4of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page5of11 Code:AB-RF-05-b Models:MD038,YT18 ProjectNo.:18220WC301473Page6of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page7of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page8of11 Code:AB-RF-05-b Allmodels ProjectNo.:18220WC301473Page9of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page10of11 Code:AB-RF-05-b ProjectNo.:18220WC301473Page11of11 Code:AB-RF-05-b

LabelLocationOnEUT Theproductistoosmalltoplacecompletelabelinformation,sothelabelisplacedinthe usermanual. Label

ProjectNo.:18220WC301471Page1of6 Code:AB-RF-05-b AppendixIII--InternalPhotograph ProjectNo.:18220WC301471Page2of6 Code:AB-RF-05-b ProjectNo.:18220WC301471Page3of6 Code:AB-RF-05-b ProjectNo.:18220WC301471Page4of6 Code:AB-RF-05-b ANT ProjectNo.:18220WC301471Page5of6 Code:AB-RF-05-b ProjectNo.:18220WC301471Page6of6 Code:AB-RF-05-b

RFEXPOSUREEVALUATION FCCID:2AXPW-MD033 AccordingtoKDB447498D01MobileandPortableDevicesRFExposure ProceduresandEquipmentAuthorizationPoliciesv06. 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 2402-1.34-1.34±1-0.3450.2873 GFSK2441-1.68-1.68 ± 1-0.6850.2673 2480-2.39-2.39±1-1.3950.2293 2402-2.07-2.07±1-1.0750.2423 π/4-DQPSK2441-2.30-2.30 ± 1-1.3050.2323 2480-3.02-3.02±1-2.0250.1983 2402-2.00-2.00±1-1.0050.2463 8DPSK2441-2.25-2.25 ± 1-1.2550.2343 2480-2.91-2.91±1-1.9150.2033 Result:NoStandaloneSARtestisrequired.

客户签名： 产品规格说明书 PRODUCT SPECIFICATION 日期: 产品名称： MD038B PRODUCT NAME 产品编码： MD038B PRODUCT NUMBER 客户编码： CUSTOMER NUMBER 编写： 曾庆雄 校对：曾庆雄 批准：张强 日 期 : 2023.06.10 深圳恒信达通信科技有限公司 SHENZHEN HXD COMMUNICATION TECH CO.,LTD. TEL:0755-61123122 FAX:0755-61123480 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 天 线 规 格 书 品名MD038B 机型 True Wireless Stereo Earphones 电 气 性 能 1.带宽2.402GHz ~2.480GHz 2.输入阻抗 50Ω 3.VSWR When assembled with the specified prototype, it is placed naturally for measurement 2.402GHz ~2.480GHz 1.5以下 4.GAIN 2.402GHz ~2.480GHz GAIN=3.19dBi(Typical) Test method: (一) Assemble the antenna under test (DUT) on the specified prototype. (二) Connect the test point on the test piece to the network analyzer with a 50Ω coaxial cable to test the cable A magnetic ring is added to reduce the influence of induced current. (三) The prototype was placed on a stand with a height of 20cm to test the VSWR when OPEN or CLOSE. (四). Install the test circuit as shown below. (五). The test environment is not specified. (No large metal objects around, carried out in normal temperature and humidity) 4.Allowable power 1W 5 -25~+65°C 6. -40~+85°C 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 Network analyzer prototype Support frame Coaxial cable 天 线 规 格 书 品名MD038B 机型 True Wireless Stereo Earphones BLUE TOOTH ANTENNA 匹配电路 Matching specification E1NCNC E20R0R E32.2PF1.8PF 左右 Antenna configuration Single-pole FPC antenna 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 天 线 规 格 书 品名MD038B 机型 True Wireless Stereo Earphones RETURN LOSS 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 天 线 规 格 书 品名MD038B 机型 True Wireless Stereo Earphones Y-Z PLANE 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 天 线 规 格 书 品名MD038B 机型 True Wireless Stereo Earphones X-Y PLANE 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 天 线 规 格 书 品名MD038B 机型 True Wireless Stereo Earphones X-Z PLANE 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0 天 线 规 格 书 品 名 MD038B 机 型 蓝牙耳机 文件编号(Doc. No.)：SPEC-001 版次(Rev.)：1.0

Page1of52 AppendixTestData ReportNo.:18220WC30147301TestSampleNo.:1-2-2 StartTestDate:2023.07.20FinishTestDate:2023.08.01 TestEngineer:Auditor: Temperature:25.3 °C RelativeHumidity:47% Pressure:1012hPa AppendixA:20dBEmissionBandwidth TestResult TestModeAntennaFrequency[MHz]20dbEBW[MHz]FL[MHz]FH[MHz] DH5Ant1 24021.0652401.4662402.531 24411.0592440.4722441.531 24801.0472479.4842480.531 2DH5Ant1 24021.3352401.3462402.681 24411.3142440.3612441.675 24801.3532479.3372480.690 3DH5Ant1 24021.3172401.3522402.669 24411.3472440.3282441.675 24801.3052479.3522480.657 Page2of52 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page3of52 2DH5_Ant1_2402 2DH5_Ant1_2441 Page4of52 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Page5of52 3DH5_Ant1_2480 Page6of52 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz]OCB[MHz]FL[MHz]FH[MHz] DH5Ant1 24020.948462401.52972402.4781 24410.954152440.52802441.4821 24800.967552479.52032480.4878 2DH5Ant1 24021.22802401.39922402.6272 24411.23432440.39942441.6337 24801.23352479.39532480.6288 3DH5Ant1 24021.22892401.38952402.6184 24411.23142440.38792441.6193 24801.21702479.40032480.6173 Page7of52 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page8of52 2DH5_Ant1_2402 2DH5_Ant1_2441 Page9of52 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Page10of52 3DH5_Ant1_2480 Page11of52 AppendixC:Maximumconductedoutputpower TestResultPeak TestModeAntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict DH5Ant1 2402-1.34≤20.97PASS 2441-1.68≤20.97PASS 2480-2.39≤20.97PASS 2DH5Ant1 2402-2.07≤20.97PASS 2441-2.30≤20.97PASS 2480-3.02≤20.97PASS 3DH5Ant1 2402-2.00≤20.97PASS 2441-2.25≤20.97PASS 2480-2.91≤20.97PASS Page12of52 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page13of52 2DH5_Ant1_2402 2DH5_Ant1_2441 Page14of52 2DH5_Ant1_2480 3DH5_Ant1_2402 3DH5_Ant1_2441 Page15of52 3DH5_Ant1_2480 Page16of52 AppendixD:Carrierfrequencyseparation TestResult TestModeAntennaFrequency[MHz]Result[MHz]Limit[MHz]Verdict DH5Ant1Hop1.048≥0.710PASS 2DH5Ant1Hop1.082≥0.902PASS 3DH5Ant1Hop1.004≥0.898PASS Page17of52 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Page18of52 Page19of52 AppendixE:Timeofoccupancy TestResult TestModeAntennaFrequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s]Limit[s]Verdict DH1Ant1Hop0.3753170.119≤0.4PASS DH3Ant1Hop1.6311580.258≤0.4PASS DH5Ant1Hop2.8791150.331≤0.4PASS 2DH1Ant1Hop0.3843140.121≤0.4PASS 2DH3Ant1Hop1.6371600.262≤0.4PASS 2DH5Ant1Hop2.884970.28≤0.4PASS 3DH1Ant1Hop0.3853180.122≤0.4PASS 3DH3Ant1Hop1.6351590.26≤0.4PASS 3DH5Ant1Hop2.8851220.352≤0.4PASS Page20of52 TestGraphs DH1_Ant1_Hop DH3_Ant1_Hop Page21of52 DH5_Ant1_Hop Page22of52 2DH1_Ant1_Hop 2DH3_Ant1_Hop Page23of52 2DH5_Ant1_Hop Page24of52 3DH1_Ant1_Hop 3DH3_Ant1_Hop Page25of52 3DH5_Ant1_Hop Page26of52 Page27of52 AppendixF:Numberofhoppingchannels TestResult TestModeAntennaFrequency[MHz]Result[Num]Limit[Num]Verdict DH5Ant1Hop79≥15PASS 2DH5Ant1Hop79≥15PASS 3DH5Ant1Hop79≥15PASS Page28of52 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Page29of52 Page30of52 AppendixG:Bandedgemeasurements TestResult TestModeAntennaChNameFrequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 Low24020.26-46.55≤-19.74PASS High24800.52-45.31≤-19.49PASS LowHop_24020.06-46.79≤-19.94PASS HighHop_24800.33-46.57≤-19.67PASS 2DH5Ant1 Low2402-0.22-47.2≤-20.22PASS High24800.35-46.89≤-19.65PASS LowHop_24020.20-47.22≤-19.8PASS HighHop_24800.01-48.62≤-20PASS 3DH5Ant1 Low2402-0.42-47.08≤-20.42PASS High24800.47-46.83≤-19.54PASS LowHop_2402-0.47-47.07≤-20.47PASS HighHop_2480-1.51-48.57≤-21.51PASS Page31of52 TestGraphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 Page32of52 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 Page33of52 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 Page34of52 3DH5_Ant1_Low_2402 3DH5_Ant1_High_2480 Page35of52 3DH5_Ant1_Low_Hop_2402 3DH5_Ant1_High_Hop_2480 Page36of52 AppendixH:ConductedSpuriousEmission TestResult TestModeAntennaFrequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 2402 Reference-0.02-0.02---PASS 30~1000-0.02-57.08≤-20.02PASS 1000~26500-0.02-43.11≤-20.02PASS 2441 Reference0.100.10---PASS 30~10000.10-56.67≤-19.9PASS 1000~265000.10-41.98≤-19.9PASS 2480 Reference0.090.09---PASS 30~10000.09-57.03≤-19.91PASS 1000~265000.09-40.63≤-19.91PASS 2DH5Ant1 2402 Reference-0.15-0.15---PASS 30~1000-0.15-57.18≤-20.15PASS 1000~26500-0.15-45.34≤-20.15PASS 2441 Reference-2.24-2.24---PASS 30~1000-2.24-56.77≤-22.24PASS 1000~26500-2.24-42.72≤-22.24PASS 2480 Reference-1.91-1.91---PASS 30~1000-1.91-56.03≤-21.91PASS 1000~26500-1.91-43.64≤-21.91PASS 3DH5Ant1 2402 Reference-4.19-4.19---PASS 30~1000-4.19-55.82≤-24.19PASS 1000~26500-4.19-46.36≤-24.19PASS 2441 Reference-0.74-0.74---PASS 30~1000-0.74-57.47≤-20.74PASS 1000~26500-0.74-41.65≤-20.74PASS 2480 Reference-0.54-0.54---PASS 30~1000-0.54-56.61≤-20.54PASS 1000~26500-0.54-42.12≤-20.54PASS Page37of52 TestGraphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 Page38of52 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 Page39of52 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 Page40of52 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference Page41of52 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference Page42of52 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 Page43of52 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 Page44of52 3DH5_Ant1_2402_0~Reference 3DH5_Ant1_2402_30~1000 Page45of52 3DH5_Ant1_2402_1000~26500 3DH5_Ant1_2441_0~Reference 3DH5_Ant1_2441_30~1000 Page46of52 3DH5_Ant1_2441_1000~26500 3DH5_Ant1_2480_0~Reference Page47of52 3DH5_Ant1_2480_30~1000 3DH5_Ant1_2480_1000~26500 Page48of52 AppendixI:DutyCycle TestResult TestModeAntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] DH5Ant1 24022.893.7577.071.13 24412.883.7477.011.13 24802.893.7577.071.13 2DH5Ant1 24022.893.7577.071.13 24412.893.7577.071.13 24802.893.7676.861.14 3DH5A…

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ReportNo.:18220WC30147301FCCID:2AXPW-MD033Page1of34 Code:AB-RF-05-b FCCTestReport Applicant: ShenzhenMoldullAcousticTechnology Co.,Ltd. Address: 403HuiyiWealthCenterNo.9,Zhongxin Road,DalangLonghuaNewArea,Shenzhen City,GuangdongProvince,China ProductName:TrueWirelessStereoEarphones ReportDate:Aug.17,2023 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC30147301FCCID:2AXPW-MD033Page2of34 Code:AB-RF-05-b Contents 1.GeneralInformation ............................................................................................................................................6 1.1.ClientInformation ....................................................................................................................................6 1.2.DescriptionofDevice(EUT) ..................................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest .................................................................................................7 1.4.DescriptionofTestConfiguration ..........................................................................................................7 1.5.DescriptionOfTestSetup ......................................................................................................................8 1.6.TestEquipmentList .................................................................................................................................9 1.7.MeasurementUncertainty ....................................................................................................................10 1.8.DescriptionofTestFacility ...................................................................................................................10 2.SummaryofTestResults .................................................................................................................................11 3.ConductedEmissionTest ................................................................................................................................12 3.1.TestStandardandLimit ........................................................................................................................12 3.2.TestSetup ...............................................................................................................................................12 3.3.TestProcedure .......................................................................................................................................12 3.4.TestData .................................................................................................................................................12 4.RadiationSpuriousEmissionandBandEdge .............................................................................................15 4.1.TestStandardandLimit ........................................................................................................................15 4.2.TestSetup ...............................................................................................................................................15 4.3.TestProcedure .......................................................................................................................................16 4.4.TestData .................................................................................................................................................17 5.MaximumPeakOutputPowerTest ...............................................................................................................27 5.1.TestStandardandLimit ........................................................................................................................27 5.2.TestSetup ...............................................................................................................................................27 5.3.TestProcedure .......................................................................................................................................27 5.4.TestData .................................................................................................................................................27 6.20dBOccupyBandwidthTest .........................................................................................................................28 6.1.TestStandard .........................................................................................................................................28 6.2.TestSetup ...............................................................................................................................................28 6.3.TestProcedure .......................................................................................................................................28 6.4.TestData .................................................................................................................................................28 7.CarrierFrequencySeparationTest ................................................................................................................29 7.1.TestStandardandLimit ........................................................................................................................29 7.2.TestSetup ...............................................................................................................................................29 7.3.TestProcedure .......................................................................................................................................29 7.4.TestData .................................................................................................................................................29 8.NumberofHoppingChannelTest ..................................................................................................................30 8.1.TestStandardandLimit ..............................................…

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ProjectNo.:18220WC301473Page1of2 Code:AB-RF-05-b AppendixI--TestSetupPhotograph PhotoofConductedEmissionMeasurement PhotoofRadiationEmissionTest ProjectNo.:18220WC301473Page2of2 Code:AB-RF-05-b