2AXAS-C5SHELMET WIRELESS EARPHONE

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[Shenzhen Zhonglineng Technology Co., LTD] [501, B2 Building, 2nd Industrial park, NO.56, Xiakeng 2st Road] [Tongde community, Baolong street, Longgang District, Shenzhen] [China] Date: Apr. 11, 2024 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AXAS-C5S US Agent – Attestation Statement / Part 2.911(d)(7) [Shenzhen Zhonglineng Technology Co., LTD] certifies, that as of [Apr. 11, 2024], we have designated FCC US Agent, LLC to accept service of process on our behalf for FCC ID: 2AXAS- C5S. [Shenzhen Zhonglineng Technology Co., LTD], accepts to maintain an agent of service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. FCC US Agent, LLC, accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of [Shenzhen Zhonglineng Technology Co., LTD] for FCC ID: 2AXAS-C5S. Designated Agent Information: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Phone: 708-571-3148 Email: [email protected] Sincerely, Company: [Shenzhen Zhonglineng Technology Co., LTD] FRN: 0029871001 Designated Agent: FCC US Agent, LLC Company Representative: [HaoJie Li] Tel: +86- 13538185829 Email: [email protected] Designated Agent Representative: Tim Payne Signature: Signature:

Shenzhen Zhonglineng Technology Co., LTD 501, B2 Building, 2nd Industrial park, NO.56, Xiakeng 2st Road, Tongde community, Baolong street, Longgang District, Shenzhen China Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Apr. 11, 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AXAS-C5S FRN: 0029871001 [Shenzhen Zhonglineng 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) Name: HaoJie Li Title: General Manager

Report No.: AGC15344240403AP03 Page 1 of 4 EXTERNAL PHOTOS WHOLE VIEW OF EUT TOP VIEW OF EUT Report No.: AGC15344240403AP03 Page 2 of 4 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC15344240403AP03 Page 3 of 4 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC15344240403AP03 Page 4 of 4 RIGHT VIEW OF EUT ****************************************End of Report*************************************

FCC ID Label Location 10mm*20mm FCC ID: 2AXAS-C5S

Report No.: AGC15344240403AP03 Page 1 of 4 INTERNAL PHOTOS VIEW OF EUT(PORT)-1 VIEW OF EUT(PORT)-2 Report No.: AGC15344240403AP03 Page 2 of 4 OPEN VIEW OF EUT VIEW OF BATTERY Report No.: AGC15344240403AP03 Page 3 of 4 INTERNAL VIEW OF EUT (FIGURE 1) INTERNAL VIEW OF EUT (FIGURE 2) BT Antenna Report No.: AGC15344240403AP03 Page 4 of 4 INTERNAL VIEW OF EUT (FIGURE 3) ****************************************End of Report*************************************

Page 1 of 10 RF Exposure Report Report No.: AGC15344240403FH01 FCC ID : 2AXAS-C5S APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : HELMET WIRELESS EARPHONE BRAND NAME : N/A MODEL NAME : C5S APPLICANT : Shenzhen Zhonglineng Technology Co., LTD DATE OF ISSUE : Apr. 10, 2024 STANDARD(S) : FCC KDB 447498 D01 V06 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC15344240403FH01 Page 2 of 10 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Apr. 10, 2024 Valid Initial Release Report No.: AGC15344240403FH01 Page 3 of 10 Table of Contents 1. General Information ........................................................................................................................................ 4 2. Product Information ........................................................................................................................................ 5 2.1 Product Technical Description ................................................................................................................... 5 3. Test Environment ............................................................................................................................................ 6 3.1 Address Of The Test Laboratory ............................................................................................................... 6 3.2 Test Facility ................................................................................................................................................ 6 3.3 Environmental Conditions ......................................................................................................................... 7 4. Portable Device Evaluation Method and Limit ............................................................................................. 8 5. Mobile Device Evaluation Method and Limit ................................................................................................ 9 6. Measurement Results ................................................................................................................................... 10 7. Measurement Evaluation .............................................................................................................................. 10 Report No.: AGC15344240403FH01 Page 4 of 10 1. General Information Applicant Shenzhen Zhonglineng Technology Co., LTD Address 501, B2 Building, 2nd Industrial park, NO.56, Xiakeng 2st Road, Tongde community, Baolong street, Longgang District, Shenzhen China Manufacturer Shenzhen Zhonglineng Technology Co., LTD Address 501, B2 Building, 2nd Industrial park, NO.56, Xiakeng 2st Road, Tongde community, Baolong street, Longgang District, Shenzhen China Factory Shenzhen Zhonglineng Technology Co., LTD Address 501, B2 Building, 2nd Industrial park, NO.56, Xiakeng 2st Road, Tongde community, Baolong street, Longgang District, Shenzhen China Product Designation HELMET WIRELESS EARPHONE Brand Name N/A Test Model C5S Series Model(s) N/A Difference Description N/A Date of receipt of test item Apr. 02, 2024 Date of Test Apr. 02, 2024 to Apr. 10, 2024 Deviation from Standard No any deviation from the test method Condition of Test Sample Normal Test Result Pass Test Report Form No AGCER-FCC-RF Exposure-V1 Note: The test results of this report relate only to the tested sample identified in this report. Prepared By Thea Huang (Project Engineer) Apr. 10, 2024 Reviewed By Calvin Liu (Reviewer) Apr. 10, 2024 Approved By Max Zhang (Authorized Officer) Apr. 10, 2024 Report No.: AGC15344240403FH01 Page 5 of 10 2. Product Information 2.1 Product Technical Description Frequency Band (Operating) Bluetooth: 2.402GHz ~ 2.480GHz Other: Hardware Version V1.0 Software Version V1.0 Modulation Type BR GFSK, EDR π /4-DQPSK, 8DPSK Maximum Transmitter Power -0.972dBm Device Category Portable (<20cm separation) Mobile (>20cm separation) Others: Antenna Diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Antenna Designation PCB Antenna Antenna Gain 1.92dBi Minimum Assessment Distance 5mm Evaluation Applied MPE Evaluation SAR Evaluation Report No.: AGC15344240403FH01 Page 6 of 10 3. Test Environment 3.1 Address Of The Test Laboratory Laboratory: Attestation of Global Compliance (Shenzhen) Co., Ltd. Address: 1-2/F, Building 19, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China 3.2 Test Facility The test facility is recognized, certified, or accredited by the following organizations: CNAS-Lab Code: L5488 Attestation of Global Compliance (Shenzhen) Co., Ltd. has been assessed and proved to follow CNAS-CL01 Accreditation Criteria for Testing and Calibration Laboratories (identical to ISO/IEC17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories.) A2LA-Lab Cert. No.: 5054.02 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been accredited by A2LA for technical competence in the field of electrical testing, and proved to follow ISO/IEC 17025: 2017 General Requirements for the Competence of Testing and Calibration Laboratories and any additional program requirements in the identified field of testing. FCC-Registration No.: 975832 Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the FCC (Federal Communications Commission). The acceptance letter from the FCC is maintained in our files with Registration 975832. IC-Registration No.: 24842(CAB identifier: CN0063) Attestation of Global Compliance (Shenzhen) Co., Ltd. EMC Laboratory has been registered and fully described in a report filed with the Certification and Engineering Bureau of Industry Canada. The acceptance letter from the IC is maintained in our files with Registration 24842. Report No.: AGC15344240403FH01 Page 7 of 10 3.3 Environmental Conditions …

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zhong Antenna Test Report Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City PCB Model Name 1 . Product Overview & Dimension 2 . Test system 3 . Antenna Matching Network 4 . Test Result 4 . 1 S11 Parameter 4 . 2 Test coordinate 4 . 3 2D Pattern 4 .4 OTA Data 4 . 5 BT Boot measured 5 . Antenna Assembly & environmental processing Purpose This report is to measure the performance of BT antenna for263.The antenna operating frequency at 2.4~2.5GHz, All test data are showed as below. Content Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City Sequence Number Test Item equipment S parameterVSWRAgilent 5071C & Agilent 5062A OTA TestTRP&TIS CMW500 &CMW270 ETS&SATIMO Gain & Efficiency Gain & Efficiency ETS&SATIMO Agilent 5071C 2. Test System Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City 3. Antenna Size Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City Sample status & coordinates Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City (L-R) Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City 无源S11—(BTANT)- Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City Frequency (MHz)Efficiency (%)Peak GAIN (dBi) 2400 31.871.08 2410 34.610.88 2420 37.320.59 2430 41.670.38 2440 43.920.47 2450 45.371.26 2460 45.911.92 2470 44.451.11 2480 41.491.34 2490 39.181.78 2500 36.411.31 Test Result Gain & Efficiency——BT- ANT Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City Test Result 2D&3D——BT- ANT Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City Test Result 2D&3D——BT- ANT Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City Tes 2D&3 t Shenzhen Xinlianxin Electronics Co.，Ltd Reg Add:5/F,Building 2,Hezhou Anle Industrial Park,Hezhou Conmunity ,Hangcheng Street, Bao'an District,Shenzhen City

Page 1 of 64 FCC Test Report Report No.: AGC15344240403FR01 FCC ID : 2AXAS-C5S APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : HELMET WIRELESS EARPHONE BRAND NAME : N/A MODEL NAME : C5S APPLICANT : Shenzhen Zhonglineng Technology Co., LTD DATE OF ISSUE : Apr. 10, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC15344240403FR01 Page 2 of 64 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Apr. 10, 2024 Valid Initial Release Report No.: AGC15344240403FR01 Page 3 of 64 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ................................................................................................................... 6 2.2 Test Frequency List ................................................................................................................................... 6 2.3 Related Submittal(S) / Grant (S) ............................................................................................................... 7 2.4 Test Methodology ...................................................................................................................................... 7 2.5 Receiver Input Bandwidth ......................................................................................................................... 7 2.6 Equally Average Use of Frequencies and Behaviour................................................................................ 7 2.7 Pseudorandom Frequency Hopping Sequence ........................................................................................ 8 2.8 Special Accessories .................................................................................................................................. 9 2.9 Equipment Modifications ........................................................................................................................... 9 2.10 Antenna Requirement ............................................................................................................................. 9 3. Test Environment .......................................................................................................................................... 10 3.1 Address of The Test Laboratory .............................................................................................................. 10 3.2 Test Facility .............................................................................................................................................. 10 3.3 Environmental Conditions ....................................................................................................................... 11 3.4 Measurement Uncertainty ....................................................................................................................... 11 3.5 List of Equipment Used ........................................................................................................................... 12 4.System Test Configuration ............................................................................................................................ 14 4.1 EUT Configuration ................................................................................................................................... 14 4.2 EUT Exercise ........................................................................................................................................... 14 4.3 Configuration of Tested System .............................................................................................................. 14 4.4 Equipment Used in Tested System ......................................................................................................... 14 4.5 Summary of Test Results ........................................................................................................................ 15 5. Description of Test Modes ........................................................................................................................... 16 6. RF Output Power Measurement .................................................................................................................. 17 6.1 Provisions Applicable .............................................................................................................................. 17 6.2 Measurement Procedure ......................................................................................................................... 17 6.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 17 6.4 Measurement Result ............................................................................................................................... 18 7. 20dB Bandwidth and 99% Occupied Bandwidth Measurement ............................................................... 22 7.1 Provisions Applicable .............................................................................................................................. 22 7.2 Measurement Procedure ......................................................................................................................... 22 7.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 22 7.4 Measurement Results ............................................................................................................................. 23 8. Conducted Band Edge and Out-of-Band Emissions ......................…

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Report No.: AGC15344240403AP02 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC15344240403AP02 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************