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QBSBNFUFST FCC Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) 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 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. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Rev11/20/07 (ShenzhenShiganCultureTechnologyCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationofFCCID: 2AKVI-T1 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestconfidential treatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitTypeFileName BlockDiagram, Schematics, OperationalDescription BlockDiagram Schematics OperationalDescription Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrant forthisapplication. Sincerely, (JUNDAYE)

ShenzhenShiganCultureTechnologyCo.,Ltd ModelDifference Productdescription:PoputarSmartGuitarKepmaCo-brandEdition Modelname:T1 T2,T3,T2PRO,P1,P2,P3,P2PRO TradeName:N/A FCCID:2AKVI-T1 AllthemodelarethesamecircuitandRFmodule,exceptmodelnamesandcolor. Regards Sincerely Client’ssignature: Client’sname/title:JUNDAYE/Manager Contactinformation/address:No.704,KKStar,Floor7,KonkaR&Dbuilding,No.28 KejiyuanKejiSouth12Road,YuehaiAvenue,NanshanDistrict,Shenzhen,China

(ShenzhenShiganCultureTechnologyCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 1435OaklandMillsRoad Columbia,MD21046 Date: SUBJECT:FCCApplicationforFCCID:2AKVI-T1 ToWhomItMayConcern: We,theundersigned,herebyauthorizeAlanMeiatShenzhenBCTCTestingCo.,Ltd.on ourbehalf,toapplytotheFederalCommunicationsCommissiononourequipment.Any andallactscarriedoutbyAlanMeiofShenzhenBCTCTestingCo.,Ltd.onourbehalf shallhavethesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,the applicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection5301ofthe Anti-DrugActof1988,21USC853a,andnopartytotheapplicationissubjecttoadenial offederalbenefitspursuanttothatsection. Regards, (JUNDAYE)

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Size:40*20mm T1 FCCID:2AKVI-T1 Thisdevicecomplieswithpart15oftheFCCRules.Operation issubjecttothefollowingtwoconditions: (1)Thisdevicemaynotcauseharmfulinterference,and (2)Thisdevicemustacceptanyinterferencereceived,including interferencethatmaycauseundesiredoperation. Label location

InternalPhotos Antenna

RFEXPOSUREEVALUATIONMETHOD FCCID:2AKVI-T1 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. BLE maxpossibleoutputpower(PK,conducted)：0±1dbm 0.99dBilogarithmictermsconverttonumericresultisnearly1.26. 1dbm=1.26mW 2402MHz [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)]=1.26/5*√2.402=0.39≤3.0 ThresholdatwhichnoSARrequiredis10mwand≤3.0for1-gSAR,Separation distanceis5mm. Modulation Frequency (MHz) OutputPower (dBm) MaxAntenna Gain(dBi) GFSK2402 0.44 0.99 GFSK 2440 -0.45 0.99 GFSK 2480 -0.90 0.99 2440MHz [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)]=1.26/5*√2.440=0.39≤3.0 ThresholdatwhichnoSARrequiredis10mwand≤3.0for1-gSAR,Separation distanceis5mm. 2480MHz [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)]=1.26/5*√2.48=0.40≤3.0 ThresholdatwhichnoSARrequiredis10mwand≤3.0for1-gSAR,Separation distanceis5mm. Conclusion:NoSARisrequired.

Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 1 of 37 Test Report FCC: 2AKVI-T1 Product Name: Poputar Smart Guitar Kepma Co-brand Edition Trademark: Poputar Model Name : T1 T2, T3, T2 PRO, P1, P2, P3, P2 PRO Prepared For : Shenzhen Shigan Culture Technology Co., Ltd Address : No. 704,KKStar,Floor 7,Konka R & D building,No. 28 Kejiyuan Keji South 12 Road,Yuehai Avenue,Nanshan District,Shenzhen, China Prepared By : Shenzhen BCTC Testing Co., Ltd. Address : BCTC Building & 1-2F, East of B Building, Pengzhou Industrial, Fuyuan 1st Road, Qiaotou Community, Fuyong Street, Bao’an District, Shenzhen, China Test Date: Jun. 18, 2020 to Jun. 30, 2020 Date of Report : Jun. 30, 2020 Report No.: BCTC2006001372E Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 2 of 37 TEST RESULT CERTIFICATION Applicant’s name ................. : Shenzhen Shigan Culture Technology Co., Ltd Address ................................. : No. 704,KKStar,Floor 7,Konka R & D building,No. 28 Kejiyuan Keji South 12 Road,Yuehai Avenue,Nanshan District,Shenzhen, China Manufacture's Name ............ : Shenzhen Shigan Culture Technology Co., Ltd Address ................................. : No. 704,KKStar,Floor 7,Konka R & D building,No. 28 Kejiyuan Keji South 12 Road,Yuehai Avenue,Nanshan District,Shenzhen, China Product description Product name ........................... : Poputar Smart Guitar Kepma Co-brand Edition Trademark ................................. : Poputar Model and/or type reference : T1 T2, T3, T2 PRO, P1, P2, P3, P2 PRO Standards ............................. : FCC Part15.247 ANSI C63.10:2013 This device described above has been tested by BCTC, 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 BCTC, this document may be altered or revised by BCTC, personal only, and shall be noted in the revision of the document. Prepared by(Engineer): Kelsey Tan Reviewer(Supervisor): Eric Yang Approved(Manager): Zero Zhou Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 3 of 37 Table of Contents Page 1 . SUMMARY OF TEST RESULTS 5 1.1 TEST FACILITY 6 1.2 MEASUREMENT UNCERTAINTY 6 2 . GENERAL INFORMATION 7 2.1 GENERAL DESCRIPTION OF EUT 7 2.2 DESCRIPTION OF TEST MODES 8 2.3 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 8 2.4 DESCRIPTION OF SUPPORT UNITS(CONDUCTED MODE) 9 2.5 EQUIPMENTS LIST FOR ALL TEST ITEMS 10 3 . EMC EMISSION TEST 11 3.1 CONDUCTED EMISSION MEASUREMENT 11 3.1.1 POWER LINE CONDUCTED EMISSION LIMITS 11 3.1.2 TEST PROCEDURE 11 3.1.3 DEVIATION FROM TEST STANDARD 11 3.1.4 TEST SETUP 12 3.1.5 EUT OPERATING CONDITIONS 12 3.1.6 TEST RESULTS 12 3.2 RADIATED EMISSION MEASUREMENT 13 3.2.1 RADIATED EMISSION LIMITS 13 3.2.2 TEST PROCEDURE 14 3.2.3 DEVIATION FROM TEST STANDARD 14 3.2.4 TEST SETUP 14 3.2.5 EUT OPERATING CONDITIONS 16 3.2.6 TEST RESULTS (BETWEEN 9KHZ – 30 MHZ) 17 3.2.7 TEST RESULTS (BETWEEN 30MHZ – 1GHZ) 18 3.3 RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION 21 3.3.1 TEST REQUIREMENT: 21 3.3.2 TEST PROCEDURE 21 3.3.3 DEVIATION FROM TEST STANDARD 22 3.3.4 TEST SETUP 22 3.3.5 EUT OPERATING CONDITIONS 22 4 . POWER SPECTRAL DENSITY TEST 24 4.1 APPLIED PROCEDURES / LIMIT 24 Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 4 of 37 Table of Contents Page 4.1.1 TEST PROCEDURE 24 4.1.2 DEVIATION FROM STANDARD 24 4.1.3 TEST SETUP 24 4.1.4 EUT OPERATION CONDITIONS 24 4.1.5 TEST RESULTS 25 5 . BANDWIDTH TEST 27 5.1 APPLIED PROCEDURES / LIMIT 27 5.1.1 TEST PROCEDURE 27 5.1.2 DEVIATION FROM STANDARD 27 5.1.3 TEST SETUP 27 5.1.4 EUT OPERATION CONDITIONS 27 5.1.5 TEST RESULTS 28 6 . PEAK OUTPUT POWER TEST 30 6.1 APPLIED PROCEDURES / LIMIT 30 6.1.1 TEST PROCEDURE 30 6.1.2 DEVIATION FROM STANDARD 30 6.1.3 TEST SETUP 30 6.1.4 EUT OPERATION CONDITIONS 30 6.1.5 TEST RESULTS 31 7 . 100 KHZ BANDWIDTH OF FREQUENCY BAND EDGE 32 7.1 APPLICABLE STANDARD 32 7.2 TEST PROCEDURE 32 7.3 DEVIATION FROM STANDARD 32 7.4 TEST SETUP 32 7.5 EUT OPERATION CONDITIONS 32 7.6 TEST RESULTS 32 8 . ANTENNA REQUIREMENT 35 8.1 STANDARD REQUIREMENT 35 8.2 EUT ANTENNA 35 9 . EUT TEST PHOTO 36 10 . EUT PHOTO 37 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 5 of 37 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.247 (a)(2) 6dB Bandwidth PASS 15.247 (b) Peak Output Power PASS 15.247 (d), 15.205 Radiated Spurious Emission PASS 15.247 (e) Power Spectral Density PASS 15.205 Restricted Band of Operation PASS 15.247(d) Band Edge (Out of Band Emissions) PASS 15.203 Antenna Requirement PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 6 of 37 1.1 TEST FACILITY Shenzhen BCTC Testing Co., Ltd. Add.: BCTC Building & 1-2F, East of B Building, Pengzhou Industrial, Fuyuan 1st Road, Qiaotou Community, Fuyong Street, Bao’an District, Shenzhen, China FCC Test Firm Registration Number: 712850 IC Registered No.: 23583 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage facto…

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Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2006001372E Test Report Tel: 400-788-9558 Web: https://www.bctc-lab.com BCTC/RF-EMC-007 Ver.：A.0 Page 36 of 37 9. EUT TEST PHOTO Radiated Measurement Photos