TB-MPE166983 RF Exposure_2ATHG-W1_

FCC ID: 2ATHG-W1

RF Exposure Info

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FCCID_4361459

Shenzhen Toby Technology Co., Ltd. Report No.: TB-MPE166983 Page: 1 of 5 RF Exposure Evaluation FCC ID: 2ATHG-W1 1. Client Information Applicant : Weret AB Address : C/O The Techno Creatives Geijersgatan 1B, SE41134 Manufacturer : Dissa International Co., Limited 7th Floor, Baojiali Building, Gushu, Bao'an District, Shenzhen (518126), Address : China. 2. General Description of EUT EUT Name : Weret Ocean Models No. : W1 Model Difference : N/A Product Wireless Charger: 110KHz-205KHz : Operation Frequency: Description Bluetooth V4.2: 2402~2480 MHz Power Supply : Input: DC 5V, 0.8A Output: DC 5V, 0.5A Input: DC 5V, 0.5A Software Version : PD2430C, 3.7V, 75mAh, 40uA current consumption. Hardware Version : FW: 1.22, iOS App v0.2(b12), Android App v0.4 Connecting I/O : Please refer to the User's Manual Port(S) Note: More test information about the EUT please refer the RF Test Report. TB-RF-074-1.0 1A/F., Bldg.6, Yusheng Industrial Zone, The National Road No.107 Xixiang Section 467, Xixiang, Bao’an, Shenzhen, China Tel: +86 75526509301 Fax: +86 75526509195

Report No.: TB-MPE166983 Page: 2 of 5 RF Exposure Considerations -----For Wireless Charger 1. Measuring Standard KDB 680106 D01 RF Exposure Wireless Charging App v03. 2. Requirements According to the item 5.2 of KDB 680106 D01v03: Inductive wireless power transfer applications that meet all of the following requirements are excluded from submitting an RF exposure evaluation: (1) Power transfer frequency is less than 1 MHz. (2) Output power from each primary coil is less than or equal to 15 watts. (3) The transfer system includes only single primary and secondary coils. This includes charging systems that may have multiple primary coils and clients that are able to detect and allow coupling only between individual pairs of coils. (4) Client device is placed directly in contact with the transmitter. (5) Mobile exposure conditions only (portable exposure conditions are not covered by this exclusion). (6) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface from all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit. Limits For Maximum Permissible Exposure (MPE) TB-RF-074-1.0

Report No.: TB-MPE166983 Page: 3 of 5 3. Test Setup 15cm Note: The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface. 4.Test Procedure 1) The RF exposure test was performed in anechoic chamber. 2) The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface. 3) The highest emission level was recorded and compared with limit as soon as measurement of each points (A, B, C, D, E) were completed. 4) The EUT was measured according to the dictates of KDB 680106 D01 v03. Remark: The EUT’s test position A, B, C, D and E is valid for the E and H field measurements. 5. Test Equipment List Cal. Due Equipment Manufacturer Model No. Serial No. Last Cal. Date Magnetic field meter NARDA ELT-400 EE030 Sep. 27, 2018 Sep. 26, 2019 6. Mode of operation during the test / Test peripherals used We tested the load at all three power level modes, and the 100% Power level mode is the worst case, we listed the results in this report. Item No. Manufacturer Model 1 Client 100% Power level 2 Client 50% Power level 3 Client 0% Power level TB-RF-074-1.0

Report No.: TB-MPE166983 Page: 4 of 5 7. Test Result EUT was tested with empty load, half load and full load, the full load is the worst case and we listed the results in the report. E-Filed Strength Frequency Test 50% Limits Limits Test Calculated Value Calculated Value Range Distance Test Test Result Position (A/m) (V/m) (V/m) (KHz) (cm) (V/m) A 15 0.090 33.976 PASS B 15 0.086 32.472 PASS 110-205 C 15 0.098 36.682 307 614 PASS D 15 0.100 37.584 PASS E 20 0.090 33.675 PASS H-Filed Strength Frequency Test 50% Limits Limits Test Measured Value Calculated Value Range Distance Test Test Result Position (uT) (A/m) (A/m) (KHz) (cm) (A/m) A 15 0.113 0.090 PASS B 15 0.108 0.086 PASS 110-205 C 15 0.122 0.098 0.815 1.63 PASS D 15 0.125 0.100 PASS E 20 0.112 0.090 PASS Note: The aggregate H-field strengths at 15 cm surrounding the device and 20 cm above the top surface. A/m=uT/1.25 8. Test Set-up Photo Test Set-up Photo TB-RF-074-1.0

Report No.: TB-MPE166983 Page: 5 of 5 SAR Test Exclusion Calculations ---For Bluetooth 1. FCC: According to KDB 447498 D01 Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies v06. (1) Clause 4.3: General SAR test reduction and exclusion guidance Sub clause 4.31: Standalone SAR test exclusion considerations 1) The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6GHz at test separation distance≤5 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation, mm)]*[√f(GHz) ] ≤3.0 for 1-g SAR [(max. power of channel, including tune-up tolerance, mW)/(min. test separation, mm)]*[√f(GHz) ] ≤7.5.0 for 10-g SAR 2. Calculation: Test separation: 5mm Bluetooth Mode (GFSK) Conducted Turn-up Power Max power of tune Max power of tune Frequency Calculation Threshold Power Tolerance up tolerance up tolerance (GHz) Value Value (dBm) (dB) (dbm) (mw) 2.402 -6.432 -7±1 -6 0.251 0.078 3.0 2.442 -7.354 -7±1 -6 0.251 0.079 3.0 2.480 -7.792 -7±1 -6 0.251 0.079 3.0 The worst RF Exposure Evaluation is calculated as 0.079 < limit 3.0, So standalone SAR measurements are not required. -----END OF REPORT----- TB-RF-074-1.0


Document Created: 2019-07-18 10:22:59
Document Modified: 2019-07-18 10:22:59
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