RF Exposure Info

FCC ID: 2ANY2MPW07

RF Exposure Info

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FCCID_4433118

Report Number: 68.950.19.0598.01A



                                    RF exposure Estimation for WPTT

1.     Introduction

       Product:                                     PowerWatch Series 2

       Model no.:                                   PW07

       FCC ID:                                      2ANY2MPW07

       Options and accessories:                     Wireless Charger

       Rating:                                      3.85Vdc 340mAh Li-ion Rechargeable battery

       RF Transmission Frequency:                   2402MHz-2480MHz


       No. of Operated Channel:                     40

       Modulation:                                  GFSK

       Antenna Type:                                Integrated antenna

       Antenna Gain:                                -10.1dBi

       Description of the EUT:                      The Equipment Under Test (EUT) is a watch which support Bluetooth
                                                    function operated at 2.4GHz.


2.     Limit and Guidelines on Exposure to Electromagnetic Fields
       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 ensure that the public is not exposed to radio
       frequency energy level in excess of the Commission’s guideline.


       According to KDB 447498 D01 Mobile Portable RF Exposure v05r02, no SAR required if power
       is lower than the flowing threshold:
       The 1-g 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 calculation25
            • The result is rounded to one decimal place for comparison
            • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below




                                     TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch
       Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China


Report Number: 68.950.19.0598.01A

       The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm
       and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test
       separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to
       determine SAR test exclusion.


3.     Calculation method


       [(max. power of` channel, including tune-up tolerance, mW)/(min. test separation distance,
       mm)] ·[√f(GHz)] ≤ 3.0


       Conducted Power + tune up tolerance =1.47mW (1.66dBm)
       Distance = 5 mm
       f = 2.402 GHz


       [1.47/5] * SQRT(2.402) =0.46
       0.46 ≤ 3.0
       Therefore, excluded from SAR testing.


TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch


Reviewed by:                                                                    Prepared By:




John Zhi/ Project Manager                                                           Alan Xiong/ Project Engineer
Date: 2019-08-08                                                                    Date: 2019-08-08




                                     TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch
       Building 12&13, Zhiheng Wisdomland Business Park, Nantou Checkpoint Road 2, Nanshan District, Shenzhen City, 518052, P. R. China



Document Created: 2019-09-09 17:05:42
Document Modified: 2019-09-09 17:05:42

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