2BBNW-XG33Open style audio headphones

(ShenZhenXinTuCenturyTechnologyCo.,Ltd.) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024-8-12 FCCID:2BBNW-XG33 Ref.#1:AttestationStatementsPart2.911(d)(5)(i)Filing (ShenZhenXinTuCenturyTechnologyCo.,Ltd.)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Ref.#2:AttestationStatementsPart2.911(d)(5)(ii)Filing ( ShenZhenXinTuCenturyTechnologyCo.,Ltd. )certifiesthat,asofthedateofthefilingof theapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Applicant:ShenZhenXinTuCenturyTechnologyCo.,Ltd. Address:No.5/FA,BuildingA1,AnlelndustrialZone,172HangchengAvenue,Hangcheng Street,BaoanDistrict,Shenzhen 2024-8-12 ContactPerson:ZhiPengCai Tel.:13713727600 Email:[email protected] Sincerely, Signature:

ShenZhenXinTuCenturyTechnologyCo.,Ltd. * theapplicantmustdesignateacontactlocatedintheUnitedStatesforpurposesofactingasthe applicant’sagentforserviceofprocess,regardlessofwhethertheapplicantisadomesticorforeign entity.AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. U.S.AgentDesignationforServiceofProcess- CertificationAttestationLetter 8/12/2024 FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 ATTN.:ReviewingEngineer FCCID:2BBNW-XG33 FRN:0033884602 Persection2.911(d)(7)oftheFCCrules, (ShenZhenXinTuCenturyTechnologyCo.,Ltd.)certifiesthattheequipmentforwhich authorizationissoughtisdesignatedtothefollowingU.S.agent*forserviceofprocess: FederalRegistrationNumber(FRN):0033701590 CompanyName:UUXGROUPINC PhysicalU.S.CompanyAddress:36South18thAvenue,SuiteABrighton,COUSA80601 County:Adams Agentname:JackFu Agentphone ： (213)375-3998 AgentEmailAddress:[email protected] Theabovecontactpersonacceptstheobligationforserviceofprocess. Theapplicantacceptstomaintainanagentfornolessthanoneyearafterthegranteehas terminatedallmarketingandimportationortheconclusionofanyCommission-related proceedinginvolvingtheequipment. ApplicantSigned:AgentSigned(ifdifferenttoApplicant): Signed:Signed: Printedname:ZhiPengCaiPrintedname:JackFu Title: Manager Title:Manager CompanyName:ShenZhenXinTu CenturyTechnologyCo.,Ltd.CompanyName:UUXGROUPINC Date:8/12/2024Date:8/12/2024

2.4GHz 3216 Chip Antenna: 3216F245M02 3216 Chip antenna For Bluetooth / WLAN Applicationsd P/N: RANT3216F245M02 Dimension (mm) L3.23 ± 0.20 W1.66 ± 0.20 T1.23 ± 0.20 深圳市宝安区固戍兴裕路同安智创园F 栋611 611, Building F, Tongan Zhichuang Park, Xingyu Road, Gushu, Baoan District, Shenzhen 咏成國際科技有限公司電話: 13530576606 RAIN International Technology Co., Ltd.TEL: 13530576606 第1页 共10页 2.4GHz3216ChipAntenna:3216F245M02 第 2 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 PartNumberInformation RANT3216F245M02 ABCDEF A ProductSeriesAntenna BDimensionLxW3.2X1.6mm(+-0.2mm) CMaterialHighKmaterial D WorkingFrequency2.4~2.5GHz E FeedingmodeMonopole&SingleFeeding F AntennatypeType=02 1.ElectricalSpecification Specification PartNumberRANT3216F245M02 CentralFrequency2450MHz Bandwidth100(Min.)MHz ReturnLoss-6.5(Max)dB PeakGain3dBi Impedance50Ohm OperatingTemperature -40～+85°C MaximumPower4W ResistancetoSolderingHeats 10(@260 °C ) sec. PolarizationLinear AzimuthBeamwidthOmni-directional TerminationCu/Sn(Leadless) Remark:Bandwidth&PeakGainwasmeasuredunderevaluationboardofnextpage 2.4GHz3216ChipAntenna:3216F245M02 第 3 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 2.RecommendedPCBPattern EvaluationBoardDimension Unit:mm SuggestedMatchingCircuit 2.4GHz3216ChipAntenna:3216F245M02 第 4 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 LayoutDimensionsinClearancearea ( Size=5.2*5.0mm ) 50ohmtransmissionLine MatchingCircuit FootPrint(Unit:mm) 2.4GHz3216ChipAntenna:3216F245M02 第 5 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 3.MeasurementResults ReturnLoss 2.4GHz3216ChipAntenna:3216F245M02 第 6 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 RadiationPattern Y X Z Efficiency 2400MHz55.21% 2450MHz66.45% 2500MHz57.53% 2.4GHz3216ChipAntenna:3216F245M02 第 7 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 4.ReliabilityandTestCondictions ITEMREQUIREMENTSTESTCONDITION Solderability1.Wettingshallexceed90%coverage 2.Novisiblemechanicaldamage TEMP(°C) 230°C 4±1sec. 150 °C 60sec Pre-heatingtemperature:150°C/60sec. Soldertemperature:230±5°C Duration:4±1sec. Solder:Sn-Ag3.0-Cu0.5 Fluxforleadfree:rosin Solderheat Resistance 1.Novisiblemechanicaldamage 2.CentralFreq.change:within±6% TEMP(°C) 260°C 10±0.5sec. 150°C 60sec Pre-heatingtemperature:150°C/60sec. Soldertemperature:260±5°C Duration:10±0.5sec. Solder:Sn-Ag3.0-Cu0.5 Fluxforleadfree:rosin Component Adhesion (Pushtest) 1.Novisiblemechanicaldamage Thedeviceshouldbereflow soldered(230±5°Cfor10sec.)toatinned coppersubstrateAdynometerforce gaugeshouldbeappliedthesideofthe component.Thedevicemustwith-ST-F 0.5Kgwithoutfailureofthetermination attachedtocomponent. Component Adhesion (Pulltest) 1.Novisiblemechanicaldamage Insert10cmwireintotheremainingopen eyebend,theendsofevenwirelengths upwardandwindtogether. Terminalshallnotberemarkably damaged. 2.4GHz3216ChipAntenna:3216F245M02 第 8 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 Thermalshock 1.Novisiblemechanicaldamage 2.CentralFreq.change:within±6% Phase Temperature( °C ) Time(min) 1 +85±5°C 30±3 2 RoomWithin Temperature3sec 3 -40±2 °C 30±3 4 RoomWithin Temperature3sec +85 °C =>30±3min -40 °C =>30±3min Testcycle:10cycles Thechipshallbestabilizedatnormal conditionfor2~3hoursbefore measuring. Resistanceto High Temperature 1.Novisiblemechanicaldamage 2.CentralFreq.change:within±6% 3.Nodisconnectionorshortcircuit. Temperature:85±5 °C Duration:1000±12hrs Thechipshallbestabilizedatnormal conditionfor2~3hoursbefore measuring. Resistanceto Low Temperature 1.Novisiblemechanicaldamage 2.CentralFreq.change:within±6% 3.Nodisconnectionorshortcircuit. Temperature:-40±5 °C Duration:1000±12hrs Thechipshallbestabilizedatnormal conditionfor2~3hoursbefore measuring. Humidity 1.Novisiblemechanicaldamage 2.CentralFreq.change:within±6% 3.Nodisconnectionorshortcircuit. Temperature:40±2°C Humidity:90%to95%RH Duration:1000±12hrs Thechipshallbestabilizedatnormal conditionfor2~3hoursbefore measuring. 5.SolderingandMounting Mildlyactivatedrosinfluxesarepreferred.Theminimumamountofsoldercan leadtodamagefromthestressescausedbythedifferenceincoefficientsof expansionbetweensolder,chipandsubstrate.Theterminationsaresuitable forallwaveandre-flowsolderingsystems.Ifhandsolderingcannotbe avoided,thepreferredtechniqueistheutilizationofhotairsolderingtools. ReflowSoldering PRE-HEATING 250~260 230 180 150 SOLDERING 10smax. NATURAL COOLING IronSoldering PRE-HEATINGSOLDERINGNATURAL COOLING 60~120s30~60s TIME(sec.) TIME(sec.) Recommendedtemperatureprofilesforre-flowsolderinginFigure1. Productsattachmentwithasolderingironisdiscouragedduetotheinherent processcontrollimitations.Intheeventthatasolderingironmustbe employedthefollowingprecautionsarerecommended. within3s 350 150 Over60s Gradualcooling 300 T E M P E R A T U R E ( ° C ) T E M P E R A T U R E ( ° C ) 2.4GHz3216ChipAntenna:3216F245M02 第 9 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 1.593.511.80 ‧Preheatcircuitandproductsto150°C ‧Nevercontacttheceramicwiththeirontip ‧Usea20wattsolderingironwithtipdiameterof1.0mm ‧280°Ctiptemperature(max) ‧1.0mmtipdiameter(max) ‧Limitsolderingtimeto3sec. 6.PackagingInformation TapeSpecification: ReelSpecification:(7’’,Φ180mm) 2.4GHz3216ChipAntenna:3216F245M02 第 10 页共 10 页 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 TapeWidth(mm)A(mm)B(mm)C(mm)D(mm)Chip/Reel(pcs) 89.0±0.560±213.5±0.5178±23000 7.StorageandTransportationInformation StorageConditions Tomaintainthesolderabilityofterminalelectrodes: 1.Temperatureandhumidityconditions:-10~40°Cand30~70%RH. 2.Recommendedproductsshouldbeusedwithin6monthsfromthetimeof delivery. 3.Thepackagingmaterialshouldbekeptwherenochlorineorsulfurexists intheair. TransportationConditions 1.Productsshouldbehandledwithcaretoavoiddamageorcontamination frompe…

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ShenZhenXinTuCenturyTechnologyCo.,Ltd. Date：2024-8-12 ProductModelNumber:XG33 FCCID：2BBNW-XG33 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatORGANIZATION.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyORGANIZATION.onourbehalf shallhavethesameeffectasactsofourown. Name:ZhiPengCai By: ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:13713727600 Onbehalfof:ShenZhenXinTuCenturyTechnologyCo.,Ltd.

ShenZhenXinTuCenturyTechnologyCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August12,2024 Subject;RequestforConfidentiality FCCID:2BBNW-XG33 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:ZhiPengCai Title:Manager

Siza：L:15mm*W:5mm FCCID:2BBNW-XG33

FCCID:2BBNW-XG33 RFEXPOSUREEVALUATIONMETHOD AccordingtoKDB447498D01GeneralRFExposureGuidancev06,Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluation forgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,isnotrequiredwhen thecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtestexclusion thresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]·[√f (GHz) ] ≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiation asspecifiedin§1.1307(b) EUTSpecification EUT Openstyleaudioheadphones Frequencyband (Operating) WLAN:2.412GHz~2.462GHz WLAN:5.150GHz~5.250GHz WLAN:5.725GHz~5.850GHz OthersBT:2402-2480MHz DevicecategoryPortable(<20cmseparation) Mobile(>20cmseparation) Others ExposureclassificationOccupational/Controlledexposure(S=5mW/cm2) GeneralPopulation/Uncontrolledexposure (S=1mW/cm 2 ) AntennadiversitySingleantenna Multipleantennas Txdiversity Rxdiversity Tx/Rxdiversity Max.outputpower2.984dBm(0.00199W) Antennagain(Max)3.0dBi EvaluationappliedMPEEvaluation SAREvaluation FCCID:2BBNW-XG33 RFEXPOSUREEVALUATIONMETHOD SARTestExclusionThresholdsfor100MHz – 6GHzand ≤ 50mm ApproximateSARTestExclusionPowerThresholdsatSelectedFrequenciesandTestSeparation DistancesareillustratedinthefollowingTable. The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)] · [ √ f(GHz)] ≤ 3.0for1-gSARand ≤ 7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis ≤ 50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtest exclusion. FCCID:2BBNW-XG33 Maximummeasuredtransmitterpower. BR+EDR Operating Mode Freque ncy Measur ed Power max. power Antenna Gain min.test separation distance [√f(GHz)] ResultLimit (MHz)(dBm)(mW)(dBi)(mm) GFSK 24020.6911.173.051.5500.72513 24410.6811.173.051.5620.72933 24800.2951.073.051.5750.67263 π/4DQPSK 24022.4601.763.051.5501.08973 24412.4441.763.051.5621.09453 24802.1201.633.051.5751.02393 8-DPSK 24022.9841.993.051.5501.22953 24412.9551.973.051.5621.23123 24802.5981.823.051.5751.14303 Remark:Thebestcasegainoftheantennais3.0dBi. 3.0dBilogarithmictermsconverttonumericresultisnearly2.0 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattest separationdistances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)] ThetestResultislessthan3.0for1-gSARand≤7.5for10-gextremitySAR. Conclusion:NoSARisrequired.

BSL Testing Co.,Ltd. Report No.: BSL24080014P01-R01 Page 1 of 42 FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No........................:BSL24080014P01-R01 FCC ID. ................................................ :2BBNW-XG33 Compiled by ( position+printed name+signature)..: Engineer/ Cindy Zheng Supervised by ( position+printed name+signature) .. : Manager/Haley Wen Approved by ( position+printed name+signature) .. : RF Manager/ Vivian Jiang Date of issue.........................................:August 9, 2024 Testing Laboratory Name ................ : BSL Testing Co., Ltd. Address ................................................. : 1/F, Building B, Xinshidai GR Park,Shiyan Street, Bao'an District, Shenzhen,Guangdong, 518052, People’s Republic of China Applicant’s name...............................: ShenZhen XinTu Century Technology Co.,Ltd. Address ................................................. : No. 5/FA, Building A1, Anle lndustrial Zone, 172 Hangcheng Avenue, Hangcheng Street, Baoan District, Shenzhen Test specification .............................. : Standard ................................................ :FCC Part 15.247 BSL Testing Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the BSL Testing Co., Ltd. is acknowledged as copyright owner and source of the material. BSL Testing Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description........................: Open style audio headphones Trade Mark............................................: N/A Manufacturer ......................................... : ShenZhen XinTu Century Technology Co.,Ltd. Model/Type reference.........................: XG33 Listed Models......................................: N/A Modulation ........................................... :GFSK, Π/4DQPSK, 8DPSK Frequency..............................................From 2402MHz to 2480MHz Rating.....................................................:DC 3.7V From Battery Result.....................................................:PASS BSL Testing Co.,Ltd. Report No.: BSL24080014P01-R01 Page 2 of 42 TEST REPORT Equipment under Test:Open style audio headphones Model /Type:XG33 Listed Models:N/A Model Declaration:N/A Applicant : ShenZhen XinTu Century Technology Co.,Ltd. Address: No. 5/FA, Building A1, Anle lndustrial Zone, 172 Hangcheng Avenue, Hangcheng Street, Baoan District, Shenzhen Manufacturer : ShenZhen XinTu Century Technology Co.,Ltd. Address: No. 5/FA, Building A1, Anle lndustrial Zone, 172 Hangcheng Avenue, Hangcheng Street, Baoan District, Shenzhen Test Result:PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. BSL Testing Co.,Ltd. Report No.: BSL24080014P01-R01 Page 3 of 42 Contents 1T E S T S T A N D A R D S ...................................................................................................................4 2S U M M A R Y ...................................................................................................................................... 5 2.1General Remarks5 2.2Product Description5 2.3Equipment Under Test5 2.4Short description of the Equipment under Test (EUT)5 2.5EUT operation mode6 2.6Block Diagram of Test Setup6 2.7Related Submittal(s) / Grant (s)6 2.8Modifications6 3T E S T E N V I R O N M E N T ............................................................................................................. 7 3.1Address of the test laboratory7 3.2Test Facility7 3.3Environmental conditions7 3.4Summary of measurement results8 3.5Statement of the measurement uncertainty8 3.6Equipments Used during the Test9 4T E S T C O N D I T I O N S A N D R E S U L T S ............................................................................1 1 4.1AC Power Conducted Emission11 4.2Radiated Emission14 4.3Maximum Peak Output Power20 4.420dB Bandwidth23 4.5Frequency Separation26 4.6Number of hopping frequency28 4.7Time of Occupancy (Dwell Time)30 4.8Out-of-band Emissions33 4.9Pseudorandom Frequency Hopping Sequence39 4.10 Antenna Requirement40 5T E S T S E T U P P H O T O S O F T H E E U T ..........................................................................4 1 6P H O T O S O F T H E E U T .........................................................................................................4 2 BSL Testing Co.,Ltd. Report No.: BSL24080014P01-R01 Page 4 of 42 1TESTSTANDARDS The tests were performed according to following standards: FCC Rules Part 15.247 : Frequency Hopping, Direct Spread Spectrum and Hybrid Systems that are in operation within the bands of 902-928 MHz, 2400-2483.5 MHz, and 5725-5850MHz. ANSI C63.10-2013 : American National Standard for Testing Unlicensed Wireless Devices BSL Testing Co.,Ltd. Report No.: BSL24080014P01-R01 Page 5 of 42 2 SUMMARY 2.1 General Remarks Date of receipt of test sample: August 1, 2024 Testing commenced on:August 1, 2024 Testing concluded on: August 8, 2024 2.2 Product Description Product Name: Open style audio headphones Model/Type reference: XG33 Power supply:DC 3.7V from battery Adapter information (Auxiliary test supplied by testing Lab） Model: EP-TA20CBC Input: AC 100-240V 50/60Hz Output: DC 5V 2A Firmware Version: EPTA5.14.2 Manufacture: Huizhou Dongyang Yienbi Electronics Co., Ltd Hardware version:/ Software version:/ Testing sample ID： BSL24080014P01-R01-1# (Engineer sample) BSL24080014P01-R01-2# (Normal sample) Bluetooth : Supported Type:Bluetooth BR/EDR Modulation:GFSK, π/4DQPSK, 8DPSK Operation frequency:2402MHz~2480MHz Channel number:79 Channel separation:1MHz Antenna type: Ceramic Antenna Antenna gain:3.0 dBi 2.3 Equipment Under Test Power supply system utilised Power supply voltage: ○ 230V / 50 Hz ○ 120V / 60Hz ○…

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FCCID：2BBNW-XG33 FCCID：2BBNW-XG33