2AVKO-SD-G4Wireless smart glasses

AC6956A 1.5 1.5

Test Model No.: SD‐G4

SD-G4 Label location Left Temple Right Temple

Test Model No.: SD‐G4

FCC ID: 2AVKO-SD-G4 RF Exposure Evaluation According to KDB 447498 and part 2.1093，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 Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 Here, For BT Max Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit 6.44 4.41 2402 5 1.367 3.0 For BLE Max Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit -3.41 0.46 2402 5 0.143 3.0 So a SAR test is not required

Global United Technology Services Co., Ltd. Report No.: GTSL202105000029F02 Authorized Signature: Robinson Luo Laboratory Manager This results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Page 1 of 28 TEST REPORT Applicant: HUIZHOU SINDE ENERGY SAVING TECHNOLOGY CO., LTD. Address of Applicant: XINXU town Tangkou Changcheng Industrial Zone Huiyang District, Huizhou City, Guangdong Province, China Manufacturer: HUIZHOU SINDE ENERGY SAVING TECHNOLOGY CO., LTD. Address of Manufacturer: XINXU town Tangkou Changcheng Industrial Zone Huiyang District, Huizhou City, Guangdong Province, China Equipment Under Test (EUT) Product Name: Wireless smart glasses Model No.: SD-G4 FCC ID: 2AVKO-SD-G4 Applicable standards: FCC CFR Title 47 Part 15 Subpart C Section 15.247 Date of sample receipt: May 07, 2021 Date of Test: May 08-17, 2021 Date of report issued: May 18, 2021 Test Result : PASS * * In the configuration tested, the EUT complied with the standards specified above. Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 28 2 Version Version No. Date Description 00 May 18, 2021 Original Prepared By: Date: May 18, 2021 Project Engineer Check By: Date: May 18, 2021 Reviewer Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 28 3 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 VERSION ...................................................................................................................................................2 3 CONTENTS ...............................................................................................................................................3 4 TEST SUMMARY ......................................................................................................................................4 5 GENERAL INFORMATION .......................................................................................................................5 5.1 GENERAL DESCRIPTION OF EUT ..........................................................................................................5 5.2 TEST MODE .........................................................................................................................................7 5.3 DESCRIPTION OF SUPPORT UNITS ........................................................................................................7 5.4 DEVIATION FROM STANDARDS ..............................................................................................................7 5.5 ABNORMALITIES FROM STANDARD CONDITIONS ....................................................................................7 5.6 TEST FACILITY ....................................................................................................................................7 5.7 TEST LOCATION ..................................................................................................................................7 5.8 ADDITIONAL INSTRUCTIONS ..................................................................................................................7 6 TEST INSTRUMENTS LIST ......................................................................................................................8 7 TEST RESULTS AND MEASUREMENT DATA .....................................................................................10 7.1 ANTENNA REQUIREMENT ....................................................................................................................10 7.2 CONDUCTED EMISSIONS ....................................................................................................................11 7.3 CONDUCTED OUTPUT POWER ............................................................................................................14 7.4 CHANNEL BANDWIDTH .......................................................................................................................15 7.5 POWER SPECTRAL DENSITY ..............................................................................................................16 7.6 SPURIOUS EMISSION IN NON-RESTRICTED & RESTRICTED BANDS ........................................................17 7.6.1 Conducted Emission Method ......................................................................................................17 7.6.2 Radiated Emission Method .........................................................................................................18 8 TEST SETUP PHOTO .............................................................................................................................28 9 EUT CONSTRUCTIONAL DETAILS .......................................................................................................28 Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 28 4 Test Summary Test Item Section in CFR 47 Result Antenna requirement 15.203/15.247 (c) Pass AC Power Line Conducted Emission 15.207 Pass Conducted Output Power 15.247 (b)(3) Pass C…

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Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 1 of 14 Appendix for 15.247 1. Duty Cycle 1.1 Test Result Test Mode Channel Frequency( MHz) TX Type ANT No. T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) 1M 2402 SISO 1 0.378 0.625 60.48 2.18 2440 SISO 1 0.378 0.625 60.48 2.18 2480 SISO 1 0.378 0.625 60.48 2.18 1.2 Test Graph Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 2 of 14 2. Bandwidth 2.1 Test Result Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 3 of 14 Test Mode Frequency (MHz) TX Type ANT No. 6dB Bandwidth Verdict Test Result (MHz) 1M 2402 SISO 1 0.680 PASS 2440 SISO 1 0.693 PASS 2480 SISO 1 0.690 PASS Test Mode Frequency (MHz) TX Type ANT No. 99% Occupied Bandwidth Test Result (MHz) 1M 2402 SISO 1 1.020 Only for Report Use 2440 SISO 1 1.020 Only for Report Use 2480 SISO 1 1.019 Only for Report Use 2.2 Test Graph - 6dB Bandwidth Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 4 of 14 2.3 Test Graph - 99% Occupied Bandwidth Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 5 of 14 Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 6 of 14 Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 7 of 14 3. Maximum Conducted Output Power 3.1 Test Result Test Mode Frequency (MHz) Tx Type Measured Peak Output Power (dBm) Limits (dBm) Verdict Ant 1 1M 2402 SISO -3.41 30 PASS 2440 SISO -3.62 30 PASS 2480 SISO -4.46 30 PASS 3.2 Test Graph Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 8 of 14 4. Maximum Power Spectral Density (PSD) 4.1 Test Result Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 9 of 14 Test Mode Frequency (MHz) Tx Type Maximum Power Spectral Density (dBm/3KHz) Limits (dBm/3kHz) Verdict Ant 1 1M 2402 SISO -18.71 ≤8 PASS 2440 SISO -18.87 ≤8 PASS 2480 SISO -19.80 ≤8 PASS 4.2 Test Graph Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 10 of 14 5. Unwanted Emissions in Non-restricted Frequency Bands 5.1 Test Result Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 11 of 14 Test Mode Frequency (MHz) TX Type ANT No. Spurious Conducted Emission (dBm) Limits (dBm) Verdict 1M 2402 SISO 1 Refer to test graph -24.27 PASS 2440 SISO 1 Refer to test graph -24.27 PASS 2480 SISO 1 Refer to test graph -24.27 PASS 5.2 Test Graph Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 12 of 14 Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 13 of 14 Report No.: GTSL202105000029F02 Global United Technology Services Co., Ltd. No. 123- 128, Tower A, Jinyuan Business Building, No.2, Laodong Industrial Zone, Xixiang Road, Baoan District, Shenzhen, Guangdong, China 518102 Telephone: +86 (0) 755 2779 8480 Fax: +86 (0) 755 2779 8960 Page 14 of 14 ------End------

Test Model No.: SD‐G4 Radiated Emission Conducted Emission