2AWG8-LIFERINGS5Smart Watch

Report No.: W EXHIBI EUT View 1 EUT View 2 WTX20X040 T 2 - EUT 1 2 18262W-3/4/5 T EXTER 5 RNAL PH HOTOGR APHS Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT View 3 EUT View 4 WTX20X040 3 4 18262W-3/4/5 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT View 5 EUT View 6 WTX20X040 5 6 18262W-3/4/5 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT View 7 EUT View 8 WTX20X040 7 8 18262W-3/4/5 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT View 9 EUT View 1 WTX20X040 9 10 18262W-3/4/5 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT View 1 EUT View 1 WTX20X040 11 12 18262W-3/4/5 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT View 1 WTX20X040 13 18262W-3/4/5 5 Model: L FCC Life Ring S5 C Part 15.247

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Report No.: W EXHIBI EUT Housi n EUT Housi n WTX20X040 T 3 - EUT ng and Boar ng and Boar 18262W-3/4/5 T INTER rd View 1 rd View 2 5 NAL PHO OTOGRA APHS Model: L FCC Life Ring S5 C Part 15.247 Report No.: W EUT Housin EUT Housin WTX20X040 ng and Boar ng and Boar 18262W-3/4/5 rd View 3 rd View 4 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W Solder Boa r Solder Boar WTX20X040 rd-Compone rd-Compone 18262W-3/4/5 ent View 1 ent View 2 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W Solder Boar Solder Boar WTX20X040 rd-Compone rd-Compone 18262W-3/4/5 ent View 3 ent View 4 5 Model: L FCC Life Ring S5 C Part 15.247 Report No.: W Antenna V i L WTX20X040 iew LTE RX Ant. 18262W-3/4/5 . 5 GSM /WC Wi-Fi/BT/G CDMA /LTE A GPSAnt Ant. Model: L FCC Life Ring S5 C Part 15.247

Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 1 of 137 SAR Report FCC SAR Measurement and Test Report For Skyring Smart Technologies(Shenzhen) Co., Ltd. 6F GDC Building, 9Gaoxin Centeral Avenue 3rd, Nanshan District,Shenzhen, P.R. China FCC ID: 2AWG8-LIFERINGS5 Test Standards: FCC Part 2.1093 ANSI / IEEE C95.1 : 2005+A1:2010 ANSI / IEEE C95.3 : 2002(R2008) IEEE 1528 :2013 Product Description: Smart Watch Tested Model: Life Ring S5 Report No.: WTX20X04018262W-7 Sample Received Date: 2020-04-27 Tested Date: 2020-04-27 to 2020-05-12 Issued Date: 2020-05-13 Tested By: Jack Sun / Engineer Reviewed By: Lion Cai / RF Manager Approved & Authorized By: Silin Chen / Manager Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Waltek Testing Group (Shenzhen) Co., Ltd. Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 2 of 137 SAR Report TABLE OF CONTENTS 1. General Information ................................................................................................................................................... 3 1.1 Product Description for Equipment Under Test (EUT) ......................................................................................... 3 1.2 Test Standards .................................................................................................................................................... 6 1.3 Test Methodology ................................................................................................................................................ 6 1.4 Test Facility ......................................................................................................................................................... 6 2. Summary of Test Results .......................................................................................................................................... 7 3. Specific Absorption Rate (SAR) ................................................................................................................................ 8 3.1 Introduction .......................................................................................................................................................... 8 3.2 SAR Definition ..................................................................................................................................................... 8 4. SAR Measurement System ........................................................................................................................................ 9 4.1 The Measurement System .................................................................................................................................. 9 4.2 Probe ................................................................................................................................................................... 9 4.3 Probe Calibration Process ................................................................................................................................. 11 4.4 Phantom ............................................................................................................................................................ 12 4.5 Device Holder .................................................................................................................................................... 12 4.6 Test Equipment List ........................................................................................................................................... 13 5. Tissue Simulating Liquids ....................................................................................................................................... 14 5.1 Composition of Tissue Simulating Liquid ........................................................................................................... 14 5.2 Tissue Dielectric Parameters for Head and Body Phantoms ............................................................................. 15 5.3 Tissue Calibration Result ................................................................................................................................... 16 6. SAR Measurement Evaluation ................................................................................................................................ 17 6.1 Purpose of System Performance Check ............................................................................................................ 17 6.2 System Setup .................................................................................................................................................... 17 6.3 Validation Results .............................................................................................................................................. 18 7. EUT Testing Position ............................................................................................................................................... 20 7.1 Wrist-worn device .............................................................................................................................................. 20 7.2 EUT Antenna Position ....................................................................................................................................... 20 8. SAR Measurement Procedures ............................................................................................................................... 21 8.1 Measurement Procedures ................................................................................................................................. 21 …

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Ref : ACR.233.1.17.SATU.A WALTEK TESTING GROUP (SHENZHEN) CO., LTD. 1/F, BUILDING A, HONGWEI INDUSTRIAL PARK, LIUXIAN 2ND ROAD BAO'AN DISTRICT SHENZHEN (518101), CHINA MVG COMOSAR DOSIMETRIC E-FIELD PROBE SERIAL NO.: SN 45/15 EPGO280 Calibrated at MVG US 2105 Barrett Park Dr. - Kennesaw, GA 30144 Calibration Date: 07/08/2019 Summary: This document presents the method and results from an accredited COMOSAR Dosimetric E-Field Probe calibration performed in MVG USA using the CALISAR / CALIBAIR test bench, for use with a COMOSAR system only. All calibration results are traceable to national metrology institutions. COMOSAR E-Field Probe Calibration Report COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.233.1.17.SATU.A Page: 2/10 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. Name Function Date Signature Prepared by : Jérôme LUC Product Manager 7/8/2019 Checked by : Jérôme LUC Product Manager 7/8/2019 Approved by : Kim RUTKOWSKI Quality Manager 7/8/2019 Customer Name Distribution : Waltek Testing Group (Shenzhen) Co., Ltd. Issue Date Modifications A 7/8/2019 Initial release COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.233.1.17.SATU.A Page: 3/10 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. TABLE OF CONTENTS 1 Device Under Test ..................................................................................................... 4 2 Product Description ................................................................................................... 4 2.1 General Information _______________________________________________________ 4 3 Measurement Method ................................................................................................ 4 3.1 Linearity ________________________________________________________________ 4 3.2 Sensitivity _______________________________________________________________ 5 3.3 Lower Detection Limit _____________________________________________________ 5 3.4 Isotropy _________________________________________________________________ 5 3.5 Boundary Effect __________________________________________________________ 5 4 Measurement Uncertainty .......................................................................................... 5 5 Calibration Measurement Results .............................................................................. 6 5.1 Sensitivity in air __________________________________________________________ 6 5.2 Linearity ________________________________________________________________ 7 5.3 Sensitivity in liquid ________________________________________________________ 7 5.4 Isotropy _________________________________________________________________ 8 6 List of Equipment .................................................................................................... 10 COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.233.1.17.SATU.A Page: 4/10 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. 1 DEVICE UNDER TEST Device Under Test Device Type COMOSAR DOSIMETRIC E FIELD PROBE Manufacturer MVG Model SSE2 Serial Number SN 45/15 EPGO280 Product Condition (new / used) New Frequency Range of Probe 0.7 GHz-6GHz Resistance of Three Dipoles at Connector Dipole 1: R1=0.193 M Dipole 2: R2=0.188 M Dipole 3: R3=0.198 M A yearly calibration interval is recommended. 2 PRODUCT DESCRIPTION 2.1 GENERAL INFORMATION MVG’s COMOSAR E field Probes are built in accordance to the IEEE 1528, OET 65 Bulletin C and CEI/IEC 62209 standards. Figure 1 – MVG COMOSAR Dosimetric E field Dipole Probe Length 330 mm Length of Individual Dipoles 2 mm Maximum external diameter 8 mm Probe Tip External Diameter 2.5 mm Distance between dipoles / probe extremity 1 mm 3 MEASUREMENT METHOD The IEEE 1528, OET 65 Bulletin C, CENELEC EN50361 and CEI/IEC 62209 standards provide recommended practices for the probe calibrations, including the performance characteristics of interest and methods by which to assess their affect. All calibrations / measurements performed meet the fore mentioned standards. 3.1 LINEARITY The evaluation of the linearity was done in free space using the waveguide, performing a power sweep to cover the SAR range 0.01W/kg to 100W/kg. COMOSAR E-FIELD PROBE CALIBRATION REPORT Ref: ACR.233.1.17.SATU.A Page: 5/10 This document shall not be reproduced, except in full or in part, without the written approval of MVG. The information contained herein is to be used only for the purpose for which it is submitted and is not to be released in whole or part without written approval of MVG. 3.2 SENSITIVITY The sensitivity factors of the three dipoles were determined using a two step calibration method (air and tissue simulating liquid) using waveguides as outlined in the standards. 3.3 LOWER DETECTION LIMIT The lower detection limit was assessed using the same measurement set up as used for the linearity measurement. The required lower detection limit is 10 mW/kg. 3.4 ISOTROPY The axial isotropy was evaluated by exposing the probe to a reference wave from a standard dipole with the dipole mounted under the flat phantom in the test configuration suggested for system validations and checks. The probe was rotated along its main axis from 0 - 360 degrees in 15 degree steps. The hemispherical isotropy is determined by inserting the probe in a thin plastic box filled with tissue-equivalent liquid, with the plasti…

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Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 61 of 137 SAR Report 10. Measurement Uncertainty 10.1 Uncertainty for EUT SAR Test a b c d e= f(d,k) f g h= c*f/e i= c*g/e k Uncertainty Component Sec. Tol (+- %) Prob. Dist. Div. Ci (1g) Ci (10g) 1g Ui (+-%) 10g Ui (+-%) Vi Measurement System Probe calibration E.2.1 7.0 N  1 1 7.00 7.00  Axial Isotropy E.2.2 2.5 R  (1_Cp)^1/2 (1_Cp)^1/2 1.02 1.02  Hemispherical Isotropy E.2.2 4.0 R  (Cp)^1/2 (Cp)^1/2 1.63 1.63  Boundary effect E.2.3 1.0 R  1 1 0.58 0.58  Linearity E.2.4 5.0 R  1 1 2.89 2.89  System detection limits E.2.5 1.0 R  1 1 0.58 0.58  Readout Electronics E.2.6 0.02 N  1 1 0.02 0.02  Reponse Time E.2.7 3.0 R  1 1 1.73 1.73  Integration Time E.2.8 2.0 R  1 1 1.15 1.15  RF ambient Conditions – Noise E.6.1 3.0 R  1 1 1.73 1.73  RF ambient Conditions - Reflections E.6.1 3.0 R  1 1 1.73 1.73  Probe positioner Mechanical Tolerance E.6.2 2.0 R  1 1 1.15 1.15  Probe positioning with respect to Phantom Shell E.6.3 0.05 R  1 1 0.03 0.03  Extrapolation, interpolation and integration Algoritms for Max. SAR Evaluation E.5 5.0 R  1 1 2.89 2.89  Test Sample Related Test sample positioning E.4.2 0.03 N  1 1 0.03 0.03  Device Holder Uncertainty E.4.1 5.00 N  1 1 5.00 5.00  Output power Variation - SAR drift measurement E.2.9 12.02 R  1 1 6.94 6.94  SAR scaling E6.5 0.0 R  1 1 0.0 0.0  Phantom and Tissue Parameters Phantom Uncertainty (Shape and thickness tolerances) E.3.1 0.05 R  1 1 0.03 0.03  Uncertainty in SAR correction for deviations in permittivity and conductivity E3.2 1.9 R  1 0.84 1.10 0.90  Liquid conductivity - deviation E.3.2 5.00 R  0.64 0.43 1.85 1.24  Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 62 of 137 SAR Report from target value Liquid conductivity - measurement uncertainty E.3.3 5.00 N  0.64 0.43 3.20 2.15  Liquid permittivity - deviation from target value E.3.2 0.37 R  0.6 0.49 0.13 0.10  Liquid permittivity - measurement uncertainty E.3.3 10.00 N  0.6 0.49 6.00 4.90  Combined Standard Uncertainty RSS  12.98 12.53  Expanded Uncertainty (95% Confidence interval) K=2  25.32 24.43  10.2 Uncertainty for System Performance Check a b c d e= f(d,k) f g h= c*f/e i= c*g/e k Uncertainty Component Sec. Tol (+- %) Prob. Dist. Div. Ci (1g) Ci (10g) 1g Ui (+-%) 10g Ui (+-%) Vi Measurement System Probe calibration E.2.1 7.0 N  1 1 7.00 7.00  Axial Isotropy E.2.2 2.5 R  (1_Cp)^1/2 (1_Cp)^1/2 1.02 1.02  Hemispherical Isotropy E.2.2 4.0 R  (Cp)^1/2 (Cp)^1/2 1.63 1.63  Boundary effect E.2.3 1.0 R  1 1 0.58 0.58  Linearity E.2.4 5.0 R  1 1 2.89 2.89  System detection limits E.2.5 1.0 R  1 1 0.58 0.58  Modulation response E.2.5 0 R  0 0 0.0 0.0  Readout Electronics E.2.6 0.02 N  1 1 0.02 0.02  Reponse Time E.2.7 3.0 R  1 1 1.73 1.73  Integration Time E.2.8 2.0 R  1 1 1.15 1.15  RF ambient Conditions – Noise E.6.1 3.0 R  1 1 1.73 1.73  RF ambient Conditions - Reflections E.6.1 3.0 R  1 1 1.73 1.73  Probe positioner Mechanical Tolerance E.6.2 2.0 R  1 1 1.15 1.15  Probe positioning with respect to Phantom Shell E.6.3 0.05 R  1 1 0.03 0.03  Extrapolation, interpolation and integration Algoritms for Max. E.5.2 5.0 R  1 1 2.89 2.89  Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 63 of 137 SAR Report SAR Evaluation Dipole Dipole axis to liquid Distance 8,E.4.2 1.00 N  1 1 0.58 0.58  Input power and SAR drift measurement 8,6.6.2 12.02 R  1 1 6.94 6.94  Deviation of experimental dipole from numerical dipole E.6.4 5.5 R  1 1 3.20 3.20  Phantom and Tissue Parameters Phantom Uncertainty (Shape and thickness tolerances) E.3.1 0.05 R  1 1 0.03 0.03  Uncertainty in SAR correction for deviations in permittivity and conductivity E3.2 2.0 R  1 0.84 1.10 1.10  Liquid conductivity - deviation from target value E.3.2 5.00 R  0.64 0.43 1.85 1.24  Liquid conductivity - measurement uncertainty E.3.3 5.00 N  0.64 0.43 3.20 2.15  Liquid permittivity - deviation from target value E.3.2 0.37 R  0.6 0.49 0.13 0.10  Liquid permittivity - measurement uncertainty E.3.3 10.00 N  0.6 0.49 6.00 4.90  Combined Standard Uncertainty RSS  12.00 11.50  Expanded Uncertainty (95% Confidence interval) K=2  23.39 22.43  Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 64 of 137 SAR Report Annex A. Plots of System Performance Check MEASUREMENT 1 For Head Liquid Type: Validation measurement (Fast, 75.00 %) Measurement duration: 7 minutes 21 seconds E-field Probe: SSE2 - SN 45/15 EPGO280; ConvF:2.39; Calibrated: 2019/07/08 A. Experimental conditions Area Scan dx=8mm dy=8mm Zoom Scan dx=8mm dy=8mm dz=5mm Phantom Validation plane Device Position Dipole Band CW750 Signal Duty Cycle 1:1 B. SAR Measurement Results Frequency (MHz) 750.000000 Relative Permittivity (real part) 41.320574 Conductivity (S/m) 0.862373 Power Variation (%) 0.038363 Ambient Temperature 21.1 Liquid Temperature 21.3 SURFACE SAR VOLUME SAR Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 65 of 137 SAR Report Maximum location: X=0.00, Y=0.00 SAR 10g (W/Kg) 1.342744 SAR 1g (W/Kg) 2.164534 Z Axis Scan Z (mm) 0.00 4.00 9.00 14.00 19.00 24.00 29.00 SAR (W/Kg) 0.0000 2.3634 1.8023 1.4523 1.2514 1.1005 1.0245 3D screen shot Hot spot position Model: Life Ring S5 Report No.: WTX20X04018262W-7 Page 66 of 137 SAR Report MEASUREMENT 2 For Head Liquid Type: Validation measurement (Fast, 75.00 %) Measurement duration: 7 minutes 21 seconds E-field Probe: SSE2 - SN 45/15 EPGO280; ConvF:2.39; Calibrated: 2019/07/08 A. Experimental conditions Area Scan dx=8mm dy=8mm Zoom Scan dx=8mm dy=8mm dz=5mm Phantom Validation plane Device Position Dipole Band CW835 Signal Duty Cycle 1:1 B. SAR Measurement Results Frequency (MHz) 835.000000 Relative Permittivity (real part) 41.110245 Conductivity (S/m) 0.871245 Power Variation (%) 0.038437 Ambient Temperature 21.1 Liquid Temperatur…

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Model: Life Ring S5 Report No.: WTX20X04018262W-4 Page 1 of 54 FCC Part 15.247 FCC Part 15C Measurement and Test Report For Skyring Smart Technologies(Shenzhen) Co., Ltd. 6F GDC Building, 9Gaoxin Centeral Avenue 3rd, Nanshan District, Shenzhen, P.R. China FCC ID: 2AWG8-LIFERINGS5 FCC Rule(s): FCC Part 15.247 Product Description: Smart Watch Tested Model: Life Ring S5 Report No.: WTX20X04018262W-4 Sample Receipt Date: Apr.13, 2020 Tested Date: Apr.13, 2020 to May.18, 2020 Issued Date: May.18, 2020 Tested By: Jason Su / Engineer Reviewed By: Lion Cai / RF Manager Approved & Authorized By: Silin Chen / Manager Prepared By: Waltek Testing Group (Shenzhen) Co., Ltd. 1/F., Room 101, Building 1, Hongwei Industrial Park, Liuxian 2nd Road, Block 70 Bao'an District, Shenzhen, Guangdong, China Tel.: +86-755-33663308 Fax.: +86-755-33663309 Website: www.semtest.com.cn Note: This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Waltek Testing Group (Shenzhen) Co., Ltd. Model: Life Ring S5 Report No.: WTX20X04018262W-4 Page 2 of 54 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ................................................................................................................................... 4 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ............................................................................... 4 1.2 TEST STANDARDS ................................................................................................................................................... 5 1.3 TEST METHODOLOGY ............................................................................................................................................. 5 1.4 TEST FACILITY ....................................................................................................................................................... 5 1.5 EUT SETUP AND TEST MODE ................................................................................................................................. 6 1.6 MEASUREMENT UNCERTAINTY .............................................................................................................................. 7 1.7 TEST EQUIPMENT LIST AND DETAILS ..................................................................................................................... 8 2. SUMMARY OF TEST RESULTS ......................................................................................................................... 10 3. RF EXPOSURE ....................................................................................................................................................... 11 3.1 STANDARD APPLICABLE ....................................................................................................................................... 11 3.2 TEST RESULT........................................................................................................................................................ 11 4. ANTENNA REQUIREMENT ................................................................................................................................ 12 4.1 STANDARD APPLICABLE ....................................................................................................................................... 12 4.2 EVALUATION INFORMATION ................................................................................................................................ 12 5. FREQUENCY HOPPING SYSTEM REQUIREMENTS ................................................................................... 13 5.1 STANDARD APPLICABLE ....................................................................................................................................... 13 5.2 FREQUENCY HOPPING SYSTEM............................................................................................................................. 13 5.3 EUT PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .................................................................................... 14 6. QUANTITY OF HOPPING CHANNELS AND CHANNEL SEPARATION ................................................... 15 6.1 STANDARD APPLICABLE ....................................................................................................................................... 15 6.2 TEST PROCEDURE ................................................................................................................................................. 15 6.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 15 7. DWELL TIME OF HOPPING CHANNEL .......................................................................................................... 19 7.1 STANDARD APPLICABLE ....................................................................................................................................... 19 7.2 TEST PROCEDURE ................................................................................................................................................. 19 7.3 SUMMARY OF TEST RESULTS/PLOTS .................................................................................................................... 20 8. 20DB BANDWIDTH ............................................................................................................................................... 27 8.1 STANDARD APPLICABLE ....................................................................................................................................... 27 8.2 TEST PROCEDURE ................................................................................................................................................. 27 8.3 SUMMARY OF TEST RESULTS/PLOTS ............................................................................................................…

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Report No.: W EXHIBI Conducted Radiation E WTX20X040 T 4 - TES Emission Te Emission Tes 18262W-3/4/5 ST SETUP est Setup st Setup (Belo 5 P PHOTO ow 30MHz) OGRAPH HS Model: L FCC Life Ring S5 C Part 15.247 Report No.: W Radiation E Radiation E WTX20X040 Emission Tes Emission Tes 18262W-3/4/5 st Setup (30M st Setup (1GH 5 MHz to 1GHz Hz to 18GHz z) z) Model: L FCC Life Ring S5 C Part 15.247 Report No.: W Radiation E WTX20X040 Emission Tes 18262W-3/4/5 st Setup (Abo 5 ove 18GHz) Model: L FCC Life Ring S5 C Part 15.247