2A9P8-D-816BLUETOOTH HEADPHONES

SHENZHENDYTIMESTECHNOLOGYCO.,LTD AgentAuthorization Company:SHENZHENDYTIMESTECHNOLOGYCO.,LTD Address: 5F,#2Building,SaituTechnopark, No.137BulanRoad,BujiTown,LonggangDistrict, ShenzhenChina. ProductName: BLUETOOTHHEADPHONES ModelNumber(s):D-816 D-812;D-812L;D-813;D-422;D-422LED;D-423;D-807;D-806; D-806ANC;D-801;D-553;D-773;D-808；D-814;D-815;D-818;D-20 ProductDescription:BLUETOOTHHEADPHONES WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2022.12.16 Name: Jackdeng Title: N/A Company:SHENZHENDYTIMESTECHNOLOGYCO.,LTD

SHENZHENDYTIMESTECHNOLOGYCO.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2022.12.16 Subject;RequestforConfidentiality FCCID:2A9P8-D-816 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure 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:Jackdeng Title: N/A

EUTPHOTO(ExternalPhotos)

Labelandlabellocation SHENZHENDYTIMESTECHNOLOGYCO.,LTD FCCID:2A9P8-D-816

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FCCID:2A9P8-D-816 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093 ， UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, ForBT ModeMax Power(dBm) Max Power(mW) Frequency(MHz)Min. distance(mm) Calc. thresholds limit GFSK-0.3740.92248050.288973.0 π/4-DQPSK0.1361.03248050.324983.0 8-DPSK-0.3290.93248050.291983.0 SoaSARtestisnotrequired

2.4GAntennaSpecification ANTPHOTO&LENTH(mm) TOPVIEW: ITEMANTSPEC ModelName2.4GANT Center Frequency HorizontalVertical 2400MHz2450MHz2500MHz2400MHz2450MHz2500MHz -1.40-1.06-0.93-1.30-1.0 MAX.Gain PolarizationHorizontalandVertical AzimuthBeam Pattern Omni-directional Impedance50Ohm AntennaLength 30mm ManufactureZHUHAIJIELITECHNOLOGYCO.,LTD -0.58dBi -0.58 Horizontal:2400MHz2450MHz2500MHz Power(dBm) Max:-0.93Min:-16.0Scale:5/div Vertical:2400MHz2450MHz2500MHz Power(dBm) Max:0Min:-30Scale:5/div 3D:2450MHz Power(dBm) Max:-0.939

Project No.: ZKT-2212079128E Page 1 of 74 FCC TEST REPORT FCC ID:2A9P8-D-816 Report Number. ................................ : ZKT-2212079128E Date of Test ......................................... Dec . 06, 2022 to Dec. 21, 2022 Date of issue ..................................... : Dec. 21, 2022 Total number of pages ....................... 74 Test Result ...................................... : PASS Testing Laboratory. ........................ : Shenzhen ZKT Technology Co., Ltd. Address ........................................... : 1/F, No. 101, Building B, No. 6, Tangwei Community Indu strial A venue, Fuhai Street, Bao'an District, Shenzhen, China Applicant's name ......................... : SHENZHEN DYTIMES TECHNOLOGY CO., LTD Address ........................................... : 5F,#2 Building,Saitu Technopark, No.137 Bulan Road,Buji Town,Longgang District, ShenzhenChina. Manufacturer's name ................... : SHENZHEN DYTIMES TECHNOLOGY CO., LTD Address ........................................... : 5F,#2 Building,Saitu Technopark, No.137 Bulan Road,Buji Town,Longgang District, ShenzhenChina. Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 ANSI C63.10:2013 Test procedure ................................. : KDB 558074 D01 15.247 Meas Guidance v05r02 Non-standard test method .............. : N/A Test Report Form No. .................... : TRF-EL-112_V0 Test Report Form(s) Originator .... : ZKT Testing Master TRF ................................... : Dated: 2021-04-22 This device described above has been tested by ZKT, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of ZKT, this document may be altered or revised by ZKT, personal only, and shall be noted in the revision of the document. Product name ................................. : BLUETOOTH HEADPHONES Trademark ....................................... : N/A Model/Type reference ....................... : D-816 D-812;D-812L;D-813;D-422;D-422LED;D-423;D-807;D-806; D-806ANC;D-801;D-553;D-773;D-808；D-814;D-815;D-818;D-20 Ratings .............................................. : Input: DC 5V 1A Battery: DC 3.7V Project No.: ZKT-2212079128E Page 2 of 74 Testing procedure and testing location: Testing Laboratory ..................................... :Shenzhen ZKT Technology Co., Ltd. Address ...................................................... :1/F, No. 101, Building B, No. 6, Tangwei Community Industrial Avenue, Fuhai Street, Bao'an District, Shenzhen, China Jim Liu Tested by (name + signature) .................... : Jackson Fang Reviewer (name + signature) ..................... : Lake Xie Approved (name + signature) .................... : Project No.: ZKT-2212079128E Page 3 of 74 Table of Contents Page 1. VERSION ............................................................... 5 2. TEST SUMMARY ........................................................ 6 2.1 TEST FACILITY ......................................................... 7 2.2 MEASUREMENT UNCERTAINTY ......................................... 7 3. GENERAL INFORMATION ................................................ 8 3.1 GENERAL DESCRIPTION OF EUT ........................................ 8 3.2 Test Setup Configuration .................................................. 9 3.3 Support Equipment ....................................................... 9 3.4 Test Mode ............................................................. 10 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS ................................ 11 4. EMC EMISSION TEST ................................................... 13 4.1 Conducted emissions .................................................... 13 4.1.1 POWER LINE CONDUCTED EMISSION Limits ........................... 13 4.1.2 TEST PROCEDURE ................................................... 13 4.1.3 DEVIATION FROM TEST STANDARD ................................... 13 4.1.4 TEST SETUP ......................................................... 13 4.1.5 EUT OPERATING CONDITIONS ........................................ 14 4.1.6 Test Result ........................................................... 15 4.2 Radiated emissions ..................................................... 17 4.2.1 Radiated Emission Limits ............................................... 17 4.2.2 TEST PROCEDURE ................................................... 17 4.2.3 DEVIATION FROM TEST STANDARD ................................... 18 4.2.4 TEST SETUP ......................................................... 18 4.2.5 EUT OPERATING CONDITIONS ........................................ 19 4.2.6 TEST RESULTS ...................................................... 20 5. RADIATED BAND EMISSION MEASUREMENT ............................ 29 5.1 Test Requirement: ...................................................... 29 5.2 TEST PROCEDURE .................................................... 29 5.3 DEVIATION FROM TEST STANDARD .................................... 30 5.4 TEST SETUP .......................................................... 30 5.5 EUT OPERATING CONDITIONS ......................................... 30 5.6 TEST RESULT ......................................................... 31 6. CONDUCTED BAND EDGE AND SPURIOUS EMISSION .................... 33 6.1 Limit ................................................................... 33 6.2 Test Setup ............................................................. 33 6.3 Test procedure ......................................................... 33 6.4 DEVIATION FROM STANDARD .......................................... 33 6.5 Test Result ............................................................. 34 7. 20DB&99% BANDWIDTH ................................................ 49 7.1 Test Setup .....…

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