2AK8Q-TKHS004BLUETOOTH HEADSETS

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. Changes or modifications not expressly approved by the party responsible for compliance could void your authority to operate the equipment.

DATE2021/7/9 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 AuthoritytoActasAgent Onourbehalf,IappointBlueAsiaTechnologyServices(Shenzhen),Limited.andBuilding C,No.107,ShihuanRoad,ShiyanSub-District,BaoanDistrict,Shenzhen,Guangdong Province,China(NameofAgentcompanynameandaddress)toactasouragentinthe preparationofthisapplicationforequipmentcertification.Icertifythatsubmitted documentsproperlydescribethedeviceorsystemforwhichequipmentcertificationis sought.Ialsocertifythateachunitmanufactured,importedormarketed,asdefinedinthe FederalCommunicationsCommission’sregulationswillhaveaffixedtoitalabelidentical tothatsubmittedforapprovalwiththisapplication. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonour behalf,Iacknowledgethatallresponsibilityforcomplyingwiththetermsandconditions forcertification,stillresideswithShenzhenUnichainTechnologyCo.,Ltd and201,2ndFloor,BuildingC,ShanhaiCommercialPlaza,Huangjunshan District,BantianStreet,LonggangDistrict,Shenzhen,China (Applicant Nameandaddress) <Signature> NameZhiyingLan TitleManager ApplicantCompanyShenzhenUnichainTechnologyCo.,Ltd

DATE2021/7/9 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2AK8Q-TKHS004 ProductName:WirelessRechargeableSilentMouse RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommissionsrules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: (Listherethedocumentsforwhichyouareseekingconfidentiality–forexample...)  Schematics  Blockdiagram Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. <Signature> NameZhiyingLan Title M anager ApplicantCompanyShenzhenUnichainTechnologyCo.,Ltd

Model No.: TK-HS004

Model No.: TK-HS004

RF Exposure Evaluation Statement Product Name: BLUETOOTH HEADSETS Model No.：TK-HS004 FCC ID：2AK8Q-TKHS004 1.1 RF Exposure Compliance Requirement 1.1.1 Standard Requirement According to KDB447498D01 General RF Exposure Guidance v06 Standalone SAR test exclusion considerations Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Exclusion Threshold condition, listed below, is satisfied. 1.1.2 Limits The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation 17 The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion 1.1.3 EUT RF Exposure Operational Mode: EDR （8-DPSK worst case） Channel Maximum Peak Conducted Output Power (dBm) Tune up tolerance (dB) Maximum tune-up Power Calculated value Exclusion threshold (dBm) (mW) 2402MHZ 3.57 ±1 4.57 2.86 0.89 3.0 2441MHz 3.50 ±1 4.50 2.82 0.88 2480MHz 4.20 ±1 5.20 3.31 1.04 Conclusion: the calculated value ≤3.0, SAR is exempted.

Page 1 of97 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Add: Building C, No. 107, Shihuan Road, Shiyan Sub-District, Baoan District, Shenzhen, Guangdong Province, China Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com TEST REPORT Product Name : BLUETOOTH HEADSETS Brand Mark : TeckNet or TECKNET Model No. : TK-HS004 FCC ID : 2AK8Q-TKHS004 Report Number : BLA-EMC-202106-A5702 Date of Sample Receipt : 2021/6/21 Date of Test : 2021/6/21 to 2021/7/7 Date of Issue : 2021/7/7 Test Standard : 47 CFR Part 15, Subpart C 15.247 Test Result : Pass Prepared for: Shenzhen Unichain Technology Co., Ltd 201, 2nd Floor, Building C, Shanhai Commercial Plaza, Huangjunshan District, Bantian Street, Longgang District, Shenzhen, China Prepared by: BlueAsia of Technical Services(Shenzhen) Co.,Ltd. Building C, No. 107, Shihuan Road, Shiyan Sub-District, Baoan District, Shenzhen, Guangdong Province, China TEL: +86-755-23059481 Compiled by: Review by: Approved by: Date: 2021/7/7 Report No.: BLA-EMC-202106-A5702 Page 2 of97 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com REPORT REVISE RECORD Version No. Date Description 00 2021/7/7 Original Report No.: BLA-EMC-202106-A5702 Page 3 of97 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com TABLE OF CONTENTS 1 TEST SUMMARY ........................................................................................................................................6 2 GENERAL INFORMATION .........................................................................................................................7 3 GENERAL DESCRIPTION OF E.U.T. .........................................................................................................7 4 TEST ENVIRONMENT ................................................................................................................................8 5 TEST MODE ................................................................................................................................................8 6 MEASUREMENT UNCERTAINTY ..............................................................................................................8 7 DESCRIPTION OF SUPPORT UNIT...........................................................................................................9 8 LABORATORY LOCATION .........................................................................................................................9 9 TEST INSTRUMENTS LIST ..................................................................................................................... 10 10 ANTENNA REQUIREMENT ..................................................................................................................... 14 10.1 CONCLUSION ....................................................................................................................................................... 14 11 CONDUCTED SPURIOUS EMISSIONS .................................................................................................. 15 11.1 LIMITS .............................................................................................................................................................. 15 11.2 BLOCK DIAGRAM OF TEST SETUP ..................................................................................................................... 15 11.3 TEST DATA .......................................................................................................................................................... 16 12 CONDUCTED PEAK OUTPUT POWER ................................................................................................. 17 12.1 LIMITS .............................................................................................................................................................. 17 12.2 BLOCK DIAGRAM OF TEST SETUP ..................................................................................................................... 17 12.3 TEST DATA .......................................................................................................................................................... 18 13 CONDUCTED EMISSIONS AT AC POWER LINE (150KHZ-30MHZ)..................................................... 19 13.1 LIMITS .............................................................................................................................................................. 19 13.2 BLOCK DIAGRAM OF TEST SETUP ..................................................................................................................... 19 13.3 PROCEDURE ..................................................................................................................................................... 19 13.4 TEST DATA .......................................................................................................................................................... 21 14 RADIATED SPURIOUS EMISSIONS ....................................................................................................... 23 14.1 LIMITS .............................................................................................................................................................. 23 14.2 BLOCK DIAGRAM OF TEST SETUP ..................................................................................................................... 24 14.3 PROCEDURE ..................................................................................................................................................... 24 14.4 TEST DATA .......................................................................................................................................................... 26 Report No.: BLA-EMC-202106-A5702 Page 4 of97 BlueAsia of Technical Services(Shenzhen) Co., Ltd. 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Model No.: TK-HS004