2BU4Y-DY30Wireless Bluetooth headphones

�. Take out the earbuds to power on automatically; the main earbud flashes slowly in red and icy blue light. �. Enable pairing on your device and select the earbud model displayed on the screen. Function IntroductionHeadphones Connection Guide Product Model Product Model Wireless Steps to connect headphones to your device: Indicator light Charging port Charging contact Touch key User Manual Please read the instructions for use A small number of people will have special reactions to specific materials. When in certain environments, long-term contact with potentially irritating substances to the skin such as soap, sweat, and UV protection products may cause skin allergic reactions. To reduce the risk of skin irritation, please do not wear the product on parts of the body with skin injuries.If your skin becomes red, swollen, itchy, or has any other irritation, please stop wearing it immediately and consult a doctor! Instructions for wearing and use This product should be stored in a cool and dry place. The operating temperature is �-��°C. Please use a soft dry cloth for daily cleaning. Never disassemble your headphones at any time, as doing so may damage the headphones or cause the battery to self-ignite.Keep the product away from heat sources or other corrosive liquids, and avoid using or placing it in any high-temperature places. If any part of this product is damaged or hot, please stop using this product immediately.Avoid exposing the headphones to rain or immersion in liquids. If not used for a long time, please charge them again before use. Storage and maintenance Listening to music at too high a volume may damage your hearing and the sound may be distorted. Hearing Damage It is recommended that the power provided by the charger must be between the minimum [�.�] watts and the maximum [�.�] watts required by the radio device to achieve maximum charging speed. Charging Safety Tips Do not use this product in places where wireless devices are prohibited or inappropriate (for example, airports in some areas, medical facilities, etc.). Otherwise, it may interfere with other electronic devices or cause other dangers. Some electronic devices may malfunction due to radio interference from this product (for example, some automotive electronic devices).Please contact the manufacturer of the electronic device for details. This device complies with part �� of the FCC Rules. Operation is subject to the following two conditions: (�) This device may not cause harmful interference, and (�) this device must accept any interference received, including interference that may cause undesired operation. Any 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 �� 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Electromagnetic Interference Tips FCC Caution: Headphone Function ControlHeadphone Function Control Please NotesCommon Problems Your headset can be used with devices that support the Bluetooth version and features of that headset. Wireless telephones and wireless network devices such as these devices may cause interference, which typically sounds like static noise.Please do not place headphones near other devices that use or emit radio waves. Headphones produce far less interference than regular cell phones, so don't worry about the When the headset is docked to a Bluetooth cell phone, an encrypted link is established between the two devices, making it difficult for devices other than the headset to listen in. Adjust the headphone volume, or move to another area and try again. Wipe with a dry, soft cloth. The headset and travel charger may not be connected, reconnect and charge the headset. Available functions may vary depending on the connected device. Will my headset work with laptops, desktop computers and PDAs? Why do I hear static or interference during a call? Do headphones interfere with electronic devices, radios or computers in the car? Can other Bluetooth cell hone users hear my calls? Why do I hear an echo during a call? How do I clean my headphones? Headphones won't fully charge? I am unable to use some of the features described in. Product Parameters V �.� ��m (obstacle-free) About �� hours About �.� hours Chip Version Effective Range Usage Duration Charging Duration Headphone Specifications Type-C ���mAh ≤ � hours Charging port Battery capacity Charging duration Charging Dock Specifications �.� - �.� W Headset Physical Button Functions Press and hold the right earbud for � seconds. Press and hold the left earbud for � seconds. PPlace the earbuds in the charging case and close the lid. Open the charging case and the earbuds will power on automatically when taken out. Voice Assistant Activate/ Deactivate ANC Power Off Power On Headphone Touch Bu…

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LocalRepresentativeLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(7),oftheCommission’sRules(47C.F.R.)weattestasfollowsfor theproductlistedbelow: FCCIDModelname 2BU4Y-DY30DY33,TWS,TWS30,TWS33,NY30,NY33,DY30 Weherebyacknowledgeasfollows: i.bothsigneesconfirmthatthepointofcontactacceptsresponsibilitytoactasaUS- AmericanRepresentativeonbehalfoftheapplicant ii.thepointofcontactprovidesthephysicalU.S.addressandemailaslistedbelow iii.bothpartiesmaintaintherequirementsofthisagreementwithoutexpirationdate US-AmericanPointofContactApplicant/ApprovalHolder SignatureSignature CompanyName:LOBOSIOWAINCShenzhenZhongkejiexun TechnologyCo.,Ltd. FRN:00364139610038123352 ContactName:HarleyLiLaiYu Address:4623BittercreekDrColorado SpringsCO80922US UnitB,602,HongchengPavilion, No.227LongfaRoad,Longyuan Community,LonghuaStreet, LonghuaDistrict,Shenzhen Phone:+18188180538N/A Email:[email protected]@qq.com

CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BU4Y-DY30DY33,TWS,TWS30,TWS33,NY30,NY33,DY30 We, Applicant CompanyName:ShenzhenZhongkejiexunTechnologyCo., Ltd. Address:UnitB,602,HongchengPavilion,No.227 LongfaRoad,LongyuanCommunity, LonghuaStreet,LonghuaDistrict,Shenzhen Phone:N/A certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofistsuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2026-05-25 SignatureDate PrintedNameofSignee:LaiYu Company:ShenzhenZhongkejiexun TechnologyCo.,Ltd. Phone:+8613243738371 Email:[email protected] Address:UnitB,602,HongchengPavilion, No.227LongfaRoad,LongyuanCommunity, LonghuaStreet,LonghuaDistrict,Shenzhen Fax:N/A

ShenzhenZhongkejiexunTechnologyCo.,Ltd. UnitB,602,HongchengPavilion,No.227LongfaRoad,LongyuanCommunity,Longhua Street,LonghuaDistrict,Shenzhen Date:2026-05-25 FCCID:2BU4Y-DY30 ModelNumber:DY33,TWS,TWS30,TWS33,NY30,NY33,DY30 To:FederalCommunicationCommission AuthorizationandEvaluationDivision7435OaklandMillsRoad Columbia,MD21048 ToWhomItMayConcern, We,ShenzhenZhongkejiexunTechnologyCo.,Ltd.herebydeclarethatourproduct (WirelessBluetoothheadphones ) ModelNumber:DY33,TWS,TWS30,TWS33,NY30, NY33,DY30electricalidentical,theSchematic,PCBlayout,structureandsoftwareare same,theonlydifferenceamongthisseriesofmodelsliesinthenamingand thecolorofthecasing.Thisisdonetodistinguishdifferentsalesmarkets. Shouldyouhaveanyquestionsorcommentsregardingthismatter,pleasehave mybestattention. Sincerely, (Signed) Name/Title:LaiYu/Manager Company:ShenzhenZhongkejiexunTechnologyCo.,Ltd. Address:UnitB,602,HongchengPavilion,No.227LongfaRoad,LongyuanCommunity, LonghuaStreet,LonghuaDistrict,Shenzhen Phone:+8613243738371 FaxNumber:N/A E-Mail:[email protected]

ConfidentialityRequestLetter ForCertificationServiceintheUSA FederalCommunicationCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoParagraphs§0.457and0.459oftheCommission’sRules(47C.F.R.)andSection §552(b)(4)oftheFreedomofInformationAct,werequestconfidentialityforthe documentationofthefollowingproducts: FCCIDModelname 2BU4Y-DY30DY33,TWS,TWS30,TWS33,NY30,NY33,DY30 Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare:  theOperationalDescription  theBlockDiagram theSchematics Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2026-05-25 SignatureDate PrintedNameofSignee/Title:LaiYu/Manager Company:ShenzhenZhongkejiexunTechnologyCo.,Ltd. Address:UnitB,602,HongchengPavilion,No.227LongfaRoad, LongyuanCommunity,LonghuaStreet,LonghuaDistrict, Shenzhen Phone:+8613243738371 Fax:-- Email:[email protected]

ReportNo.:CISRR26051512401 Page 74 of 77 9.EXTERNALANDINTERNALPHOTOS 9.1.ExternalPhotos ReportNo.:CISRR26051512401 Page 75 of 77

Label Size:10mm*10mm FCC ID:2BU4Y-DY30 Label Location

ReportNo.:CISRR26051512401 Page 76 of 77 9.2.InternalPhotos ANT ReportNo.:CISRR26051512401 Page 77 of 77 ------Endofthereport-----

ReportNo.:CISRR26051512402 Reporttemplateversion:CISE-TR-001-A0Page:1of5 TESTREPORT RFExposureEvaluation ReportNo.CISRR26051512402 ProjectNo.CISR260515124 FCCID2BU4Y-DY30 ApplicantShenzhenZhongkejiexunTechnologyCo.,Ltd. Address UnitB,602,HongchengPavilion,No.227LongfaRoad,Longyuan Community,LonghuaStreet,LonghuaDistrict,Shenzhen ManufacturerShenzhenZhongkejiexunTechnologyCo.,Ltd. Address UnitB,602,HongchengPavilion,No.227LongfaRoad,Longyuan Community,LonghuaStreet,LonghuaDistrict,Shenzhen ProductNameWirelessBluetoothheadphones Trademark- Model/TypereferenceDY30 ListedModel(s)DY33，TWS，TWS30，TWS33，NY30，NY33 Standard 47CFRPart2.1093 DateofsamplereceiptMay15,2026 TestdateMay15,2026toMay21,2026 IssuedateMay21,2026 TestresultComplied Reviewedby:LucasHuang Approvedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangceTesting TechnologyCo.,Ltd. ReportNo.:CISRR26051512402 Reporttemplateversion:CISE-TR-001-A0Page:2of5 1.APPLICABLESTANDARD 47CFRPart2.1093:Radiofrequencyradiationexposureevaluation:portabledevices ANSIC95.1–3999:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequency ElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRF ExposureProceduresandEquipmentAuthorizationPolicies. 47CFRPart1.1307:Actionsthatmayhaveasignificantenvironmentaleffect,forwhichEnvironmental Assessments(EAs)mustbeprepared. 2.REPORTVERSION VersionNo.IssuedateDescription 00May21,2026Original ReportNo.:CISRR26051512402 Reporttemplateversion:CISE-TR-001-A0Page:3of5 3.RADIOSPECIFICATIONDESCRIPTION Bluetooth Supportedtype:BREDRLE-1Mbps LE-2Mbps Note:PleaserefertoRFreportfordetailedtechnicalspecifications 4.SIMULTANEOUSTRANSMISSIONANALYSIS ThedeviceusetwotransmittermoduleandantennaforBluetooth,cantransmitsimultaneously. ReportNo.:CISRR26051512402 Reporttemplateversion:CISE-TR-001-A0Page:4of5 5.TESTRESULT 5.1.Standalonetransmission Limit: KDB447498D01v06,Clause4.3.1a) For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-g SARtestexclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation31The resultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. Result: Passed TestData RadiotypeEUT Frequency (GHz) Maximum output power #1 (dBm) Antenna gain #2 (dBi) Maximum EIRP #3 (dBm) Maximum tune-up #4 EIRP (dBm) Minimum distance (mm) Evaluated value LimitResult BT Left2.4022.292.74.995.005.000.98023.00PASS Right2.402-2.192.70.511.005.000.39023.00PASS Note #1:ThisvaluecomesfromtheRFtestreport. #2:Thisvalueisdeclaredbytheapplicant. #3:EIRP=Maximumoutputpower+Antennagain. #4:Thisvalueisdeclaredbytheapplicant. ReportNo.:CISRR26051512402 Reporttemplateversion:CISE-TR-001-A0Page:5of5 5.2.Simultaneoustransmission Limit: KDB447498D01v06,Clause4.3.2,47CFRPart1.1307 InthecaseofxedRFsourcesoperatinginthesametime-averagingperiod,orof multiplemobileorportableRFsourceswithinadeviceoperatinginthesametime averagingperiod,ifthesumofthefractionalcontributionstotheapplicablethresholds islessthanorequalto1asindicatedinthefollowingequation. Where a=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(B)ofthissectionforP,includingexistingexempttransmittersandthosebeing added. b=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(C)ofthissectionforThresholdERP,includingexistingexempttransmittersand thosebeingadded. c=numberofexistingfixed,mobile,orportableRFsourceswithknownevaluationforthespeci edminimumdistanceincludingexistingevaluatedtransmitters. P j =theavailablemaximumtime-averagedpowerortheERP,whicheverisgreater,forxed, mobile,orportableRFsourceiatadistancebetween0.5cmand40cm(inclusive). P th,j =theexemptionthresholdpower(P)accordingtoparagraph(b)(3)(i)(B)ofthissectionfor xed,mobile,orportableRFsourcei. ERP j =theERPoffixed,mobile,orportableRFsourcej. ERP th,j =exemptionthresholdERPforfixed,mobile,orportableRFsourcej,atadistanceofat leastλ/2πaccordingtotheapplicableformulaofparagraph(b)(3)(i)(C)ofthissection. Evaluated k =themaximumreportedSARorMPEoffixed,mobile,orportableRFsourcekeither inthedeviceoratthetransmittersitefromanexistingevaluationatthelocationofexposure. ExposureLimit k =eitherthegeneralpopulation/uncontrolledmaximumpermissibleexposure (MPE)orspecicabsorptionrate(SAR)limitforeachxed,mobile,orportableRFsourcek, asapplicablefrom§1.1310ofthischapter. Result:Passed TestData TypeEUT Evaluated value Standalone Limit RaitoValue (Evaluatedvalue/ StandaloneLimit) Sum Simultaneous Limit Result BT Left 0.9802 30.327 0.4571.00PASS Right 0.3902 30.130 --------EndofReport--------

ReportNo.:CISRR26051512401 Page 52 of 70 7.4.NumberOfHoppingChannel TestResult Left： ModulationPacket NumberofHopping Channel LimitResult GFSKDH57915PASS π/4DQPSK2-DH57915PASS 8DPSK3-DH57915PASS TestGraphs LowEndSpectrumChannelHoppingPlot GFSK HighEndSpectrumChannelHoppingPlot GFSK LowEndSpectrumChannelHoppingPlot π/4DQPSK HighEndSpectrumChannelHoppingPlot π/4DQPSK LowEndSpectrumChannelHoppingPlot 8DPSK HighEndSpectrumChannelHoppingPlot 8DPSK ReportNo.:CISRR26051512401 Page 53 of 70 Right： ModulationPacket NumberofHopping Channel LimitResult GFSKDH57915PASS π/4DQPSK2-DH57915PASS 8DPSK3-DH57915PASS TestGraphs LowEndSpectrumChannelHoppingPlot GFSK HighEndSpectrumChannelHoppingPlot GFSK LowEndSpectrumChannelHoppingPlot π/4DQPSK HighEndSpectrumChannelHoppingPlot π/4DQPSK LowEndSpectrumChannelHoppingPlot 8DPSK HighEndSpectrumChannelHoppingPlot 8DPSK ReportNo.:CISRR26051512401 Page 54 of 70 7.5.DutyCycle TestResult Left： ModulationPacketsChannel OnTime (ms) Period (ms) Duty Cycle(%) Duty Cycle (linear) Duty Cycle Factor (dB) 1/T GFSKDH5 02.8863.74877.000.77001.13510.3465 392.8863.74677.040.77041.13280.3465 782.8883.74877.050.77051.13230.3463 π/4DQPSK2-DH5 02.8923.74877.160.77161.12610.3458 392.8923.74877.160.77161.12610.3458 782.8943.74877.210.77211.12330.3455 8DPSK3-DH5 02.8943.74877.210.77211.12330.3455 392.8943.74677.260.77261.12050.3455 782.8943.74877.210.77211.12330.3455 TestGraphs GFSK(DH5)_Channel0GFSK(DH5)_Channel39 GFSK(DH5)_Channel78π/4DQPSK(2-DH5)_Channel0 ReportNo.:CISRR26051512401 Page 55 of 70 π/4DQPSK(2-DH5)_Channel39π/4DQPSK(2-DH5)_Channel78 8DPSK(3-DH5)_Channel08DPSK(3-DH5)_Channel39 8DPSK(3-DH5)_Channel78 ReportNo.:CISRR26051512401 Page 56 of 70 Right： ModulationPacketsChannel OnTime (ms) Period (ms) Duty Cycle(%) Duty Cycle (linear) Duty Cycle Factor (dB) 1/T GFSKDH5 02.8863.74877.000.77001.13510.3465 392.8863.74877.000.77001.13510.3465 782.8863.74877.000.77001.13510.3465 π/4DQPSK2-DH5 02.8923.74877.160.77161.12610.3458 392.8923.74877.160.77161.12610.3458 782.8923.74677.200.77201.12380.3458 8DPSK3-DH5 02.8943.74677.260.77261.12050.3455 392.8963.74877.270.77271.11990.3453 782.8943.74877.210.77211.12330.3455 TestGraphs GFSK(DH5)_Channel0GFSK(DH5)_Channel39 GFSK(DH5)_Channel78π/4DQPSK(2-DH5)_Channel0 ReportNo.:CISRR26051512401 Page 57 of 70 π/4DQPSK(2-DH5)_Channel39π/4DQPSK(2-DH5)_Channel78 8DPSK(3-DH5)_Channel08DPSK(3-DH5)_Channel39 8DPSK(3-DH5)_Channel78 ReportNo.:CISRR26051512401 Page 58 of 70 7.6.DwellTime TestResult Left： ModulationPacketChannel Pulse Width(ms) Numberof Pulsesin 31.6 seconds DwellTime (ms) Limit(ms)Result GFSKDH5 Hopping 2.89690260.64 <400 PASS π/4DQPSK2-DH52.896105304.08PASS 8DPSK3-DH52.912100291.2PASS Note:Dwelltime=Pulsetime(ms)*NumberofPulsesin31.6seconds TestGraphs PulseWidth GFSK_DH5 NumberofPulsesin31.6seconds GFSK_DH5 PulseWidth π/4DQPSK_2-DH5 NumberofPulsesin31.6seconds π/4DQPSK_2-DH5 ReportNo.:CISRR26051512401 Page 59 of 70 PulseWidth 8DPSK_3-DH5 NumberofPulsesin31.6seconds 8DPSK_3-DH5 Right： ModulationPacketChannel Pulse Width(ms) Numberof Pulsesin 31.6 seconds DwellTime (ms) Limit(ms)Result GFSKDH5 Hopping 2.896100289.6 <400 PASS π/4DQPSK2-DH52.896116335.94PASS 8DPSK3-DH52.896111321.46PASS Note:Dwelltime=Pulsetime(ms)*NumberofPulsesin31.6seconds TestGraphs PulseWidth GFSK_DH5 NumberofPulsesin31.6seconds GFSK_DH5 ReportNo.:CISRR26051512401 Page 60 of 70 PulseWidth π/4DQPSK_2-DH5 NumberofPulsesin31.6seconds π/4DQPSK_2-DH5 PulseWidth 8DPSK_3-DH5 NumberofPulsesin31.6seconds 8DPSK_3-DH5 ReportNo.:CISRR26051512401 Page 61 of 70 7.7.ConductedOutOfBandEmission TestResult Left： Non-Hopping ModulationPacketChannel OOB Emission Frequency (MHz) OOB Emission Level (dBm) Limit (dBm) OverLimit (dB) Result GFSKDH5 0 2400.00-47.300-18.18-29.120PASS 4803.85-41.578-18.18-23.398PASS 396956.26-48.982-23.82-25.162PASS 78 2483.50-47.480-23.35-24.130PASS 4960.33-48.207-23.35-24.857PASS π/4DQPSK2-DH5 0 2397.21-47.392-23.1-24.292PASS 2400.00-49.640-23.1-26.540PASS 6941.30-48.709-23.1-25.609PASS 3922061.5-48.636-24.01-24.625PASS 78 2483.50-48.390-23.37-25.020PASS 6929.63-49.206-23.37-25.836PASS 8DPSK3-DH5 0 2397.44-46.700-23.22-23.480PASS 2400.00-49.470-23.22-26.250PASS 21241.6-48.908-23.22-25.688PASS 3922059.0-49.110-24.25-24.860PASS 78 2483.50-48.240-23.59-24.650PASS 6974.57-48.628-23.59-25.038PASS Note:inputcompensationcoeffcient(dB)=CableLoss(dB) Hopping ModulationPacketChannel OOB Emission Frequency (MHz) OOB Emission Level (dBm) Limit (dBm) OverLimit (dB) Result GFSKDH5 Hopping 2396.15-45.669-22.97-22.699PASS 2400.00-48.080-22.97-25.110PASS 2483.50-47.050-23.34-23.710PASS π/4DQPSK2-DH5 2398.90-46.328-23.05-23.278PASS 2400.00-48.040-23.05-24.990PASS 2483.50-46.760-23.39-23.370PASS 8DPSK3-DH5 2397.86-45.006-23.21-21.796PASS 2400.00-47.670-23.21-24.460PASS 2483.50-46.800-23.91-22.890PASS Note:inputcompensationcoeffcient(dB)=CableLoss(dB) TestGraphs ReportNo.:CISRR26051512401 Page 62 of 70 OutOfBandEmission GFSK_DH5_Channel0 OutOfBandEmission π/4DQPSK_2-DH5_Channel0 30.0MHz-25000.0MHz GFSK_DH5_Channel0 30.0MHz-25000.0MHz π/4DQPSK_2-DH5_Channel0 OutOfBandEmission GFSK_DH5_Channel39 OutOfBandEmission π/4DQPSK_2-DH5_Channel39 ReportNo.:CISRR26051512401 Page 63 of 70 30.0MHz-25000.0MHz GFSK_DH5_Channel39 30.0MHz-25000.0MHz π/4DQPSK_2-DH5_Channel39 OutOfBandEmission GFSK_DH5_Channel78 OutOfBandEmission π/4DQPSK_2-DH5_Channel78 30.0MHz-25000.0MHz GFSK_DH5_Channel78 30.0MHz-25000.0MHz π/4DQPSK_2-DH5_Channel78 ReportNo.:CISRR26051512401 Page 64 of 70 OutOfBandEmission 8DPSK_3-DH5_Channel0 30.0MHz-25000.0MHz 8DPSK_3-DH5_Channel0 OutOfBandEmission 8DPSK_3-DH5_Channel39 30.0MHz-25000.0MHz 8DPSK_3-DH5_Channel39 OutOfBandEmission 8DPSK_3-DH5_Channel78 30.0MHz-25000.0MHz 8DPSK_3-DH5_Channel78 ReportNo.:CISRR26051512401 Page 65 of 70 OutOfBandEmission(Left) GFSK_DH5_ChannelHopping OutOfBandEmission(Left) π/4DQPSK_2-DH5_ChannelHopping OutOfBandEmission(Right) GFSK_DH5_ChannelHopping OutOfBandEmission(Right) π/4DQPSK_2-DH5_ChannelHopping OutOfBandEmission(Left) 8DPSK_3-DH5_ChannelHoppi…

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ReportNo.:CISRR26051512401 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of70 TESTREPORT ReportNo.CISRR26051512401 ProjectNo.CISR260515124 FCCID2BU4Y-DY30 ApplicantShenzhenZhongkejiexunTechnologyCo.,Ltd. Address UnitB,602,HongchengPavilion,No.227LongfaRoad,Longyuan Community,LonghuaStreet,LonghuaDistrict,Shenzhen ManufacturerShenzhenZhongkejiexunTechnologyCo.,Ltd. Address UnitB,602,HongchengPavilion,No.227LongfaRoad,Longyuan Community,LonghuaStreet,LonghuaDistrict,Shenzhen ProductNameWirelessBluetoothheadphones Trademark- Model/TypereferenceDY30 ListedModel(s) DY33，TWS，TWS30，TWS33，NY30，NY33 Standard 47CFRPart15.247 DateofsamplereceiptMay15,2026 TestdateMay15,2026toMay21,2026 IssuedateMay21,2026 TestresultComplied Reviewedby:LucasHuang Approvedby:HansHu ReportNo.:CISRR26051512401 Page 2 of 70 Contents 1.STANDARDANDAPPLICABLETESTMETHODS........................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.TESTDESCRIPTION.......................................................................................................................................4 4.SUMMARY........................................................................................................................................................5 4.1.ProductDescription*..................................................................................................................................5 4.2.RadioSpecificationDescription*..............................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................6 4.4.Deviationfromstandards...........................................................................................................................6 4.5.TestingSite...................................................................................................................................................6 5.TESTCONFIGURATION.................................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Descriptionsoftestmode...........................................................................................................................7 5.3.Testsampleinformation.............................................................................................................................7 5.4.Environmentalconditions...........................................................................................................................7 5.5.Statementofthemeasurementuncertainty.............................................................................................8 5.6.EquipmentUsedduringtheTest................................................................................................................8 6.TESTRESULTS.............................................................................................................................................11 6.1.EvaluationResults(Evaluation)...............................................................................................................11 6.1.1.AntennaRequirement.............................................................................................................................11 6.2.RadioSpectrumMatterTestResults(RF)...............................................................................................12 6.2.1.ConductedEmissionatACpowerline.................................................................................................12 6.2.2.20dBBandwidth......................................................................................................................................15 6.2.3.MaximumConductedOutputPower.....................................................................................................17 6.2.4.ChannelSeparation................................................................................................................................18 6.2.5.NumberofHoppingFrequencies..........................................................................................................19 6.2.6.DwellTime...............................................................................................................................................20 6.2.7.Conductedbandedgeandspuriousemission...................................................................................22 6.2.8.Radiatedbandedgeemission...............................................................................................................24 6.2.9.RadiatedSpuriousEmission(below1GHz).........................................................................................30 6.2.10.RadiatedSpuriousEmission(Above1GHz)......................................................................................34 7.APPENDIXREPORT......................................................................................................................................42 7.1.ConductedPeakOutputPower................................................................................................................42 7.2.20dBBandwidth.........................................................................................................................................46 7.3.CarrierFrequenciesSeparation...............................................................................................................50 7.4.NumberOfHoppingChannel.......................…

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ReportNo.:CISRR26051512401 Page 72 of 77 8.TESTSETUPPHOTOS ConductedEmissionatACpowerline Radiatedbandedgeemission RadiatedSpuriousEmission(Above1GHz) ReportNo.:CISRR26051512401 Page 73 of 77 RadiatedSpuriousEmission(below1GHz)