2BGOU-EW329wireless bluetooth headphones

(GuangzhouHuishuoElectronicTechnologyCo..Ltd.) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024-8-16 FCCID:2BGOU-EW329 Ref.#1:AttestationStatementsPart2.911(d)(5)(i)Filing (GuangzhouHuishuoElectronicTechnologyCo..Ltd.)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Ref.#2:AttestationStatementsPart2.911(d)(5)(ii)Filing ( GuangzhouHuishuoElectronicTechnologyCo..Ltd. )certifiesthat,asofthedateofthe filingoftheapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Applicant:GuangzhouHuishuoElectronicTechnologyCo..Ltd. Address:Room203,Building16,No.590TianheRoad,TianheDistrict,Guangzhou 2024-8-16 ContactPerson:MoraDeng Tel.:400-105-4098 Email:[email protected] Sincerely, Signature:

[U.S. agent] U.S. Agent Designation REP America LLC Ben Xu Sincerely, The applicant accepts its obligation to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any administrative or judicial proceeding involving the equipment, whichever is later. FRN:0035484203 per section 2.911(d)(7) of the FCC rules 2BGOU-EW329 fcc id: 10/07/2025 To: 10/07/2024 From: document: Validity of this 6 E-Mail:1501847481 Tel/Fax: :Person Mora Deng Contact Guangdong ding 16, No. 590 Tianhe Road, Tianhe District, Guangzhou, Room 203, Buil :Add Guangzhou Huishuo Electronic Technology Co., Ltd. :Applicant Name REP America LLC acknowledges their obligation to accept service of process on behalf of the applicant for the following products: as their agent for service of process for the equipment for which authorization is Name and company of U.S. agent: REP America LLC Physical U.S. address of agent: REP America LLC, Ben XU, 6510 S Academy Blvd, Ste A #523, Colorado Springs, CO 80906 FRN0034192500 Contact：Mr.Ben XU Tel.: (719) 201-3314 Email address of U.S. agent:[email protected] The applicant acknowledges their consent for the following contact located in the United States to act 7/10/2024 0A00-710No.20240 -REP America LLC -

No . TerminalName 1Fee ding/G NG 2GND /Fee ding RAN T 16 08F245C04 (A)(B)(C )(D )(E)(F) 2.4 GHz 1608 Ch ip Antenna: RANT1608 F245 C0 4 Appli ca ti on : WLA N, 80 2.1 1b/ g, Blue too th, WLA N, et c... Fea tu res SMD , high reli ab ili ty, ultra Impact, Omni- dir ect ion al... Part number Informa ti on (A)ProductTypeChip Ant enna (B) Size Code 1. 6x0 .8mm(±0.1mm) (C ) Mate ri alHi gh K mate ri al (D ) Fr equency2.4 ~ 2. 5GHz (E) Fee ding modePIFA& Single Fee ding (F) Ant enna typeType =04 Electr ica l Spec ifi cati on Worki ng Fr equencyRan ge24 00 ~2500MH z Ba ndwidth120 MH z (Mi n.) Pe ak Ga in2.7 dBi (Typ.) Impedance50 Ohm Retu rn loss10 dB ( Mi n) Po lari zat ionLine ar Azimuth Be amwidthOmni- dir ect ional Ope ration Temperatu re(°C)-40 ~85°C Resi stanceto So lderi ng Heats 10s ec. ( @ 280°C) Te rminationNi / Au (Lea dless) Dimens ion an d Te rmina l Con fi gu rati on Dimension(mm) L 1. 60±0.10 W 0. 80 ± 0.10 T 0.80±0.10 咏成國際 科技有 限公司 RAIN Inte rnat io nal Tec hn olo gy Co., Lt d. 電話 :13530 57660 6 TEL : 135 30576 606 广东省深圳市宝安区固戍兴裕路锐特科技园A栋 707(咏 成国际) 707, BuildingA, Rite SciencePark,XingyuRoad, Gushu,BaoanDistrict,Shenzhen,Guangdong, China(YongchengInternational) 2.4GHz1608ChipAntenna:RANT1608F245C04 _ 1 EvaluationBoardReference PCBDimensionAntennaLayoutReference Unit:mm ElectricalCharacteristics ReturnLoss&Radiation ELECTRICALCHARACTERISTICSS11 Radiation ElectricalCharacteristics Freque ncy EfficPercenGain 2400-1.6472.27%2.38 2450-1.3375.34%2.7 2500-1.5972.98%2.59 2.4GHz1608ChipAntenna:RANT1608F245C04 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 16087”4K/Reel 4.0±0.5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType1608 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 2.4GHz1608ChipAntenna:RANT1608F245C04 _ ReliabilityTable TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz3216ChipAntenna:RANT1608F245C03 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 12019/03/01NewDatasheet 22020/02/22Add2Dradiationcharacteristic

GuangzhouHuishuoElectronicTechnologyCo..Ltd. Date：2024-8-16 ProductModelNumber:EW329,EW330,EW322,EW337,EW334,EW339, EW336,EW335,EW338,EW333 FCCID：2BGOU-EW329 Towhomitmayconcern, Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatORGANIZATION.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyORGANIZATION.onourbehalf shallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:400-105-4098 Onbehalfof:GuangzhouHuishuoElectronicTechnologyCo..Ltd.

GuangzhouHuishuoElectronicTechnologyCo..Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:August16,2024 Subject;RequestforConfidentiality FCCID:2BGOU-EW329 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:MoraDeng Title:Manager

GuangzhouHuishuoElectronicTechnologyCo..Ltd. ProductSimilarityDeclaration Productname:wirelessBluetoothnoise-cancelingheadphones Modelname:EW329,EW330,EW322,EW337,EW334,EW339, EW336,EW335,EW338,EW333 FCCID:2BGOU-EW329 We(GuangzhouHuishuoElectronicTechnologyCo..Ltd.) herebystatethatallthemodelsareelectricalidenticalincluding thesamesoftwareparameterandhardwaredesign(i.e.,circuit design,PCBLayout,RFmodule/circuit,antennatype(s)and antennalocation,componentsonPCB,etc.,),samemechanical structureanddesign(includingproductenclosure,materials,etc.,), theonlydifferenceisthemodelnameddifferent. Signature: Name:MoraDeng Title:Manager Place,date:Room203,Building16,No.590TianheRoad,TianheDistrict,Guangzhou 2024-8-16

Siza：L:15mm*W:5mm FCCID:2BGOU-EW329

FCCID:2BGOU-EW329 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 wirelessbluetoothheadphones 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.outputpower0.128dBm(0.00103W) Antennagain(Max)2.7dBi EvaluationappliedMPEEvaluation SAREvaluation FCCID:2BGOU-EW329 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:2BGOU-EW329 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 2402-2.1240.612.751.5500.35393 2441-2.0820.622.751.5620.36033 2480-2.4520.572.751.5750.33353 π/4DQPSK 2402-0.4810.902.751.5500.51673 2441-0.7040.852.751.5620.49483 2480-1.0960.782.751.5750.45573 8-DPSK 24020.1281.032.751.5500.59453 24410.0741.022.751.5620.59193 2480-0.2890.942.751.5750.54873 Remark:Thebestcasegainoftheantennais2.7dBi. 2.7dBilogarithmictermsconverttonumericresultisnearly1.86 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.: BSL24070201P01-R01 Page 1 of 42 FCC PART 15 SUBPART C TEST REPORT FCC PART 15.247 Report Reference No........................:BSL24070201P01-R01 FCC ID.................................................:2BGOU-EW329 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 ............................... : Guangzhou Huishuo Electronic Technology Co.. Ltd. Address.................................................: Room 203, Building 16, No. 590 Tianhe Road, Tianhe District, Guangzhou Test specification..............................: Standard ................................................ : FCC Part 15.247: 85 FR 18149, Apr. 1, 2020 ANSI C63.10-2013 KDB558074 D01 V05r02: April 2, 2019 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........................: wireless bluetooth headphones Trade Mark............................................: 来酷 Manufacturer ......................................... : Laiku Technology Co., Ltd. Model/Type reference.........................: EW329 Listed Models......................................: EW330, EW322, EW337, EW334, EW339, EW336, EW335, EW338, EW333 Modulation ........................................... :GFSK, Π/4DQPSK, 8DPSK Frequency..............................................From 2402MHz to 2480MHz Rating.....................................................:DC 3.7V From Battery Result.....................................................:PASS BSL Testing Co.,Ltd. Report No.: BSL24070201P01-R01 Page 2 of 42 TEST REPORT Equipment under Test:wireless bluetooth headphones Model /Type:EW329 Listed Models:EW330, EW322, EW337, EW334, EW339, EW336, EW335, EW338, EW333 Model Declaration:All the models are electrical identical including the same software parameter and hardware design, same mechanical structure and design, the only difference is the model named different. Applicant : Guangzhou Huishuo Electronic Technology Co., Ltd. Address: Room 203, Building 16, No. 590 Tianhe Road, Tianhe District, Guangzhou Manufacturer : Laiku Technology Co., Ltd. Address: No. 1, Second Street, Airport International Logistics Zone, Tianjin Pilot Free Trade Zone (Airport Economic Zone) 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.: BSL24070201P01-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.: BSL24070201P01-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 KDB558074 D01 V05r02: Guidance for Performing Compliance Measurements on Digital Transmission Systems (DTS) Operating Under §15.247 BSL Testing Co.,Ltd. Report No.: BSL24070201P01-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 9, 2024 2.2 Product Description Product Name: wireless bluetooth headphones Model/Type reference: EW329 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:/ Softwar…

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FCCID：2BGOU-EW329 Right： FCCID：2BGOU-EW329