Zte X500 Manual page 37

Certification information (SAR)
This mobile device meets guidelines for exposure to radio waves.
Your mobile device is a radio transmitter and receiver. It is
designed not to exceed the limits for exposure to radio waves
recommended by international guidelines. These guidelines were
developed by the independent scientific organization ICNIRP and
include safety margins designed to assure the protection of all
persons, regardless of age and health.
The exposure guidelines for mobile devices employ a unit of
measurement known as the Specific Absorption Rate or SAR. The
SAR limit stated in the ICNIRP guidelines is 1.6 watts/kilogram
(W/kg) averaged over 1 grams of tissue. Tests for SAR are
conducted using standard operating positions with the device
transmitting at its highest certified power level in all tested
frequency bands. The actual SAR level of an operating device can
be below the maximum value because the device is designed to
use only the power required to reach the network. That amount
changes depending on a number of factors such as how close you
are to a network base station.
Use of device accessories and enhancements may result in
different SAR values. SAR values may vary depending on national