2AK8Q-TKHS003Bluetooth headset

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DATE2021/5/27 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

DATE2021/5/27 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2AK8Q-TKHS003 ProductName:BluetoothHeadset 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-HS003

20mm 40mm

Model NO.: TK-HS003

RF Exposure Evaluation Statement Product Name: Bluetooth Headset Model No.：TK-HS003 FCC ID：2AK8Q-TKHS003 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 4.32 ±1 5.32 3.40 1.06 3.0 2441MHz 4.03 ±1 5.03 3.18 0.99 2480MHz 3.98 ±1 4.98 3.15 0.99 Conclusion: the calculated value ≤3.0, SAR is exempted.

Page 1 of95 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 Headset Brand Mark : TeckNet or TECKNET Model No. : TK-HS003 FCC ID : 2AK8Q-TKHS003 Report Number : BLA-EMC-202105-A7202 Date of Sample Receipt : 2021/5/20 Date of Test : 2021/5/20 to 2021/5/26 Date of Issue : 2021/5/26 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: 2021/5/26 Report No.: BLA-EMC-202105-A7202 Page 2 of95 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 2021/5/26 Original Report No.: BLA-EMC-202105-A7202 Page 3 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com TABLE OF CONTENTS 1 TEST SUMMARY ........................................................................................................................................5 2 GENERAL INFORMATION .........................................................................................................................6 3 GENERAL DESCRIPTION OF E.U.T. .........................................................................................................6 4 TEST ENVIRONMENT ................................................................................................................................7 5 TEST MODE ................................................................................................................................................7 6 MEASUREMENT UNCERTAINTY ..............................................................................................................7 7 DESCRIPTION OF SUPPORT UNIT...........................................................................................................8 8 LABORATORY LOCATION .........................................................................................................................8 9 TEST INSTRUMENTS LIST ........................................................................................................................9 1 ANTENNA REQUIREMENT ..................................................................................................................... 13 1.1 CONCLUSION ............................................................................................................................................................ 13 2 CONDUCTED SPURIOUS EMISSIONS .................................................................................................. 14 2.1 LIMITS ................................................................................................................................................................... 14 2.2 BLOCK DIAGRAM OF TEST SETUP .......................................................................................................................... 14 2.3 TEST DATA .............................................................................................................................................................. 15 3 CONDUCTED EMISSIONS AT AC POWER LINE (150KHZ-30MHZ)..................................................... 16 3.1 LIMITS ................................................................................................................................................................... 16 3.2 BLOCK DIAGRAM OF TEST SETUP .......................................................................................................................... 16 3.3 PROCEDURE .......................................................................................................................................................... 16 3.4 TEST DATA .............................................................................................................................................................. 18 4 RADIATED SPURIOUS EMISSIONS ....................................................................................................... 20 4.1 LIMITS ................................................................................................................................................................... 20 4.2 BLOCK DIAGRAM OF TEST SETUP .......................................................................................................................... 21 4.3 PROCEDURE .......................................................................................................................................................... 21 4.4 TEST DATA .............................................................................................................................................................. 23 5 RADIATED EMISSIONS WHICH FALL IN THE RESTRICTED BANDS................................................. 31 5.1 LIMITS ................................................................................................................................................................... 31 5.2 BLOCK DIAGRAM OF TEST SETUP .......................................................................................................................... 32 5.3 PROCEDURE .......................................................................................................................................................... 32 5.4 TEST DATA ...........................................................…

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Report No.: BLA-EMC-202105-A7202 Page 51 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com 10.2 -20dB Bandwidth Condition Mode Frequency (MHz) Antenna -20 dB Bandwidth (MHz) Limit -20 dB Bandwidth (MHz) Verdict NVNT 1-DH1 2402 Ant1 0.934 0 Pass NVNT 1-DH1 2441 Ant1 0.92 0 Pass NVNT 1-DH1 2480 Ant1 0.873 0 Pass NVNT 2-DH1 2402 Ant1 1.317 0 Pass NVNT 2-DH1 2441 Ant1 1.33 0 Pass NVNT 2-DH1 2480 Ant1 1.317 0 Pass NVNT 3-DH1 2402 Ant1 1.246 0 Pass NVNT 3-DH1 2441 Ant1 1.259 0 Pass NVNT 3-DH1 2480 Ant1 1.262 0 Pass -20dB Bandwidth NVNT 1-DH1 2402MHz Ant1 -20dB Bandwidth NVNT 1-DH1 2441MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 52 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com -20dB Bandwidth NVNT 1-DH1 2480MHz Ant1 -20dB Bandwidth NVNT 2-DH1 2402MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 53 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com -20dB Bandwidth NVNT 2-DH1 2441MHz Ant1 -20dB Bandwidth NVNT 2-DH1 2480MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 54 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com -20dB Bandwidth NVNT 3-DH1 2402MHz Ant1 -20dB Bandwidth NVNT 3-DH1 2441MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 55 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com -20dB Bandwidth NVNT 3-DH1 2480MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 56 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com 10.3 Occupied Channel Bandwidth Condition Mode Frequency (MHz) Antenna 99% OBW (MHz) NVNT 1-DH1 2402 Ant1 0.8395342135 NVNT 1-DH1 2441 Ant1 0.8296933051 NVNT 1-DH1 2480 Ant1 0.8396576264 NVNT 2-DH1 2402 Ant1 1.193511986 NVNT 2-DH1 2441 Ant1 1.193430062 NVNT 2-DH1 2480 Ant1 1.164437854 NVNT 3-DH1 2402 Ant1 1.169663519 NVNT 3-DH1 2441 Ant1 1.174470536 NVNT 3-DH1 2480 Ant1 1.174475954 OBW NVNT 1-DH1 2402MHz Ant1 OBW NVNT 1-DH1 2441MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 57 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com OBW NVNT 1-DH1 2480MHz Ant1 OBW NVNT 2-DH1 2402MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 58 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com OBW NVNT 2-DH1 2441MHz Ant1 OBW NVNT 2-DH1 2480MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 59 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com OBW NVNT 3-DH1 2402MHz Ant1 OBW NVNT 3-DH1 2441MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 60 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com OBW NVNT 3-DH1 2480MHz Ant1 Report No.: BLA-EMC-202105-A7202 Page 61 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com 10.4 Band Edge Condition Mode Frequency (MHz) Antenna Hopping Mode Max Value (dBc) Limit (dBc) Verdict NVNT 1-DH1 2402 Ant1 No-Hopping -57.35 -20 Pass NVNT 1-DH1 2480 Ant1 No-Hopping -57.15 -20 Pass NVNT 2-DH1 2402 Ant1 No-Hopping -55.74 -20 Pass NVNT 2-DH1 2480 Ant1 No-Hopping -57 -20 Pass NVNT 3-DH1 2402 Ant1 No-Hopping -57.81 -20 Pass NVNT 3-DH1 2480 Ant1 No-Hopping -56.25 -20 Pass Band Edge NVNT 1-DH1 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 1-DH1 2402MHz Ant1 No-Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 62 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com Band Edge NVNT 1-DH1 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 1-DH1 2480MHz Ant1 No-Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 63 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com Band Edge NVNT 2-DH1 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 2-DH1 2402MHz Ant1 No-Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 64 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com Band Edge NVNT 2-DH1 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 2-DH1 2480MHz Ant1 No-Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 65 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com Band Edge NVNT 3-DH1 2402MHz Ant1 No-Hopping Ref Band Edge NVNT 3-DH1 2402MHz Ant1 No-Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 66 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com Band Edge NVNT 3-DH1 2480MHz Ant1 No-Hopping Ref Band Edge NVNT 3-DH1 2480MHz Ant1 No-Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 67 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com Report No.: BLA-EMC-202105-A7202 Page 68 of95 BlueAsia of Technical Services(Shenzhen) Co., Ltd. Tel: +86-755-23059481 Email: [email protected] www.cblueasia.com 10.5 Band Edge(Hopping) Condition Mode Frequency (MHz) Antenna Hopping Mode Max Value (dBc) Limit (dBc) Verdict NVNT 1-DH1 2402 Ant1 Hopping -56.44 -20 Pass NVNT 1-DH1 2480 Ant1 Hopping -55.94 -20 Pass NVNT 2-DH1 2402 Ant1 Hopping -56.07 -20 Pass NVNT 2-DH1 2480 Ant1 Hopping -55.88 -20 Pass NVNT 3-DH1 2402 Ant1 Hopping -56.73 -20 Pass NVNT 3-DH1 2480 Ant1 Hopping -55.51 -20 Pass Band Edge(Hopping) NVNT 1-DH1 2402MHz Ant1 Hopping Ref Band Edge(Hopping) NVNT 1-DH1 2402MHz Ant1 Hopping Emission Report No.: BLA-EMC-202105-A7202 Page 69 of95 BlueAs…

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Model NO.: TK-HS003