2BBC5-S2bluetooth headset

(Shenzhen Gao Yue Technology Co., Ltd) (May. 24, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID:2BBC5-S2) [Shenzhen Gao Yue Technology Co., Ltd] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, (Applicant signature) (Applicant printed name) GAO QINGGUO (Shenzhen Gao Yue Technology Co., Ltd) (May. 24, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID:2BBC5-S2) [Shenzhen Gao Yue Technology Co., Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) GAO QINGGUO

Attestation Statements (May. 25, 2023) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID:2BBC5-S2) (Shenzhen Gao Yue Technology Co., Ltd), the undersigned, hereby authorize (GSS SERVICE INC) to act as our designated U.S. agent for service of process, (Shenzhen Gao Yue Technology Co., Ltd) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. (GSS SERVICE INC) accepts the responsibility to act as designated U.S. agent for service of process, provides an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Information： Company name: Shenzhen Gao Yue Technology Co., Ltd Contact Name: GAO QINGGUO Address: 5F Block F No.8 East, Shangxue Tech. Park, Bantian Shenzhen guangdong518000 Telephone No: 13538214502 Email: [email protected] U.S. Agent Information: Company Name: GSS SERVICE INC Address: 6547 N Academy Blvd #2266 Colorado Springs Co 80918 USA Contact Name: Michoux Logan Telephone No: 001-949-2990192 or 001-515-7158284 Email: [email protected] FRN: 0033402082 Applicant Signature: Agent Signature: Applicant printed name: GAO QINGGUO Agent printed name: Michoux Logan

Shenzhen Gao Yue Technology Co., Ltd Model Difference Data：2023.05.24 Product description: bluetooth headset Model name: S2, SB-001, W02, W12, W11, W16, S6, S8 Trade Name: Tayogo FCC ID: 2BBC5-S2 All the model are the same circuit and RF module, except model names . Regards Sincerely Client’s signature : Client’s name / title : GAO QINGGUO（Manager） Contact information / address：5F Block F No.8 East, Shangxue Tech. Park, Bantian Shenzhen guangdong518000

Shenzhen Gao Yue Technology Co., Ltd (2023.05.25) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (bluetooth headset / S2, SB-001, W02, W12, W11, W16, S6, S8 / FCC ID: 2BBC5-S2 ) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☒ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: GAO QINGGUO Title: Manager

Shenzhen Gao Yue Technology Co., Ltd (2023.05.24) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: GAO QINGGUO Title: Manager

External Photos

FCC ID LABEL: Label Location: FCC ID: 2BBC5-S2

Internal Photos ANT

Shenzhen CTB Testing Co., Ltd. FCC ID: 2BBC5-S2 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR 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 • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. EDR: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 -3.748 0.42 -3±1 -2.00 0.63 <5 0.19558 3.00 YES 2.441 -3.394 0.46 -3±1 -2.00 0.63 <5 0.19716 3.00 YES 2.480 -3.377 0.46 -3±1 -2.00 0.63 <5 0.19873 3.00 YES 2.402 -2.899 0.51 -2±1 -1.00 0.79 <5 0.24622 3.00 YES 2.441 -2.609 0.55 -2±1 -1.00 0.79 <5 0.24821 3.00 YES 2.480 -2.567 0.55 -2±1 -1.00 0.79 <5 0.25018 3.00 YES 2.402 -2.475 0.57 -2±1 -1.00 0.79 <5 0.24622 3.00 YES 2.441 -2.229 0.60 -2±1 -1.00 0.79 <5 0.24821 3.00 YES 2.480 -2.205 0.60 -2±1 -1.00 0.79 <5 0.25018 3.00 YES GFSK π /4DQPSK 8DQPSK Conclusion: For the max result : 0.25018≤ FCC Limit 3.0 for 1g SAR.

WWW.THINKTE.COM1/12SKT321606-CD-02-R 深圳市森科泰电子有限公司 产品规格书 SPECIFICATION DESCRIPTION ChipAntenna PARTNO. SKT321606-CD-02-R VERSION V2.1 2 /12WWW.THINKTE.COMSKT321606-CD-02-R Contents 1.NamingRules3 2.AntennaSpecification4 3.AntennaDimension5 4.TestData6-8 5.LayoutGuide9 6.SolderingConditions10 7.PackagingInformation 11-12 3 /12WWW.THINKTE.COMSKT321606-CD-02-R 1.NamingRules Type ： SKT-ABCDEF-GH-IJ-K 1.SKT：ShortcutforThinkte 2.ABCDEF ： AB ： Length(mm)CD ： Width(mm) Forexample:5020105.0mm*2.0mm 3.G：Material（C-CeramicP-Polymer） 4.H：Feeding（S-SingleD-Dual） 5.IJ ： Version （ 01-99 ） 6.K：Package（R-Reel,T-Tape） 4 /12WWW.THINKTE.COMSKT321606-CD-02-R 2.Antenna Specification Outline Dimensions3.2x1.6x0.6(mm) Ground Plane 3.2x1.6(mm) Frequency Range2.4GHz ~ 2.5GHz Impedance50 Ohm Nominal Bandwidth ( under -10dB return loss) 100MHz (Typ.) RadiationOmni-directional Peak Gain 1.75 dBi (Typ.) Efficiency 60% (Typ.) PolarizationLinear Polarization Storage Temp -40 °C ~ +85 °C Color Brown 5 /12WWW.THINKTE.COMSKT321606-CD-02-R 3.AntennaDimension TypeLWTa SKT3216 3.2 ±0.2 1.6 ±0.2 0.6 ±0.2 0.4 ±0.2 TypeW1W2W3W4 SKT3216 0.4 ±0.2 0.4 ±0.2 2.4 ±0.2 1.6 ±0.2 6 /12WWW.THINKTE.COMSKT321606-CD-02-R 4.TestData: 3.1ELECTRICALCHARACTERISTICSS11 7 /12WWW.THINKTE.COMSKT321606-CD-02-R 3.2RadiationPattern EfficiencyPeakGainDirectivity 2400MHz57.45%1.3dBi2.45dBi 2450MHz60.65%1.75dBi2.89dBi 2500MHz56.75%1.45dBi2.23dBi 8 /12WWW.THINKTE.COMSKT321606-CD-02-R ChamberCoordinateSystem 9 /12WWW.THINKTE.COMSKT321606-CD-02-R 5.LayoutGuide: SolderLandPattern: Landpatternforsoldering(blackmarkingareas)isas shownbelow.Matchingcircuitisneededforgood performance,whencustomer’sdeviceisdifferent. 10 /12WWW.THINKTE.COMSKT321606-CD-02-R 6.SolderingConditions: TypicalSolderingProfileforLead-freeProcess 11 /12WWW.THINKTE.COMSKT321606-CD-02-R 7.TapingSpecifications: TapeDimensions(Unit:mm)&Quantity TypeAA’BCDEFT Qantity/ Reel Type Material SKT3216 4.0 ±0.1 4.0 ±0.1 1.95 ±0.1 3.50 ±0.1 2.0 ±0.05 3.5 ±0.1 8.0 ±0.1 0.85 ±0.1 4,000pcs Plastic (Embossed) ReelDimensions(Unit:mm) TypeABCDEF SKT3216 2.3 ±0.5 17 ±0.5 13.5 ±0.5 178 ±1 75 ±3 1.4 ±0.2 12 /12WWW.THINKTE.COMSKT321606-CD-02-R LeaderandTrailerTape SolderingConditions: (1)Temperature:5~35°C,relativehumidity(RH):45~75%. (2)Non-corrosiveenvironment

Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230523052RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 1 of 59 TEST REPORT Compiled by: Reviewed by: Approved by: Chen Zheng Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: bluetooth headset FCC ID: 2BBC5-S2 Trademark: Tayogo Model Number: S2, SB-001, W02, W12, W11, W16, S6, S8 Prepared For: Shenzhen Gao Yue Technology Co., Ltd Address: 5F Block F No.8 East, Shangxue Tech. Park, Bantian Shenzhen guangdong518000 Manufacturer: Shenzhen Gao Yue Technology Co., Ltd Address: 5F Block F No.8 East, Shangxue Tech. Park, Bantian Shenzhen guangdong518000 Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: May. 08, 2023 Sample tested Date: May. 08, 2023 to May. 24, 2023 Issue Date: May. 24, 2023 Report No.: CTB230523052RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230523052RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 59 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 4 2. TEST SUMMARY ................................................................... 5 3. MEASUREMENT UNCERTAINTY ..................................................... 6 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 7 4.1 Product Information .................................................................... 7 4.2 Test Setup Configuration ............................................................... 7 4.3 Support Equipment .................................................................... 7 4.4 Channel List .......................................................................... 8 4.5 Test Mode ............................................................................ 8 4.6 Test Environment ...................................................................... 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 9 5.1 Test Facility ........................................................................... 9 5.2 Test Instrument Used .................................................................. 9 6. AC POWER LINE CONDUCTED EMISSION ............................................ 12 6.1 Block Diagram Of Test Setup .......................................................... 12 6.2 Limit ................................................................................ 12 6.3 Test procedure ....................................................................... 12 6.4 Test Result .......................................................................... 14 7. RADIATED SPURIOUS EMISSION ................................................... 16 7.1 Block Diagram Of Test Setup .......................................................... 16 7.2 Limit ................................................................................ 16 7.3 Test procedure ....................................................................... 17 7.4 Test Result .......................................................................... 18 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 27 8.1 Block Diagram Of Test Setup .......................................................... 27 8.2 Limit ................................................................................ 27 8.3 Test procedure ....................................................................... 27 8.4 Test Result .......................................................................... 28 9. COUDUCTED PEAK OUTPUT POWER ............................................... 35 9.1 Block Diagram Of Test Setup .......................................................... 35 9.2 Limit ................................................................................ 35 9.3 Test procedure ....................................................................... 35 9.4 Test Result .......................................................................... 36 10. 20DB OCCUPIED BANDWIDTH...................................................... 40 10.1 Block Diagram Of Test Setup ......................................................... 40 10.2 Limit ............................................................................... 40 10.3 Test procedure ...................................................................... 40 10.4 Test Result ......................................................................... 40 11. CARRIERFREQUENCIES SEPARATION .............................................. 44 11.1 Block Diagram Of Test Setup ......................................................... 44 11.2 Limit ............................................................................... 44 11.3 Test procedure ...................................................................... 44 11.4 Test Result ......................................................................... 44 12. HOPPING CHANNEL NUMBER ...................................................... 48 12.1 Block Diagram Of Test Setup ......................................................... 48 12.2 Limit .......…

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Radiated Emission Below 1G Above 1G Conducted emissions