LG nexus5 Quick Start Manual page 14

Specifi c Absorption Rate (SAR) values
Your phone is a radio transmitter and receiver. It is
designed and manufactured not to exceed the emission
limits for exposure to Radio Frequency (RF) energy set
by the Federal Communications Commission of the U.S.
Government. The standards include a substantial safety
margin designed to assure the safety of all persons,
regardless of age and health.
The exposure standard for wireless mobile phones employs
a unit of measurement known as the Specifi c Absorption
Rate, or SAR. In the United States and Canada, the SAR
limit for mobile phones used by the public is 1.6 watts/kg
(W/kg) averaged over one gram of tissue.
Tests for SAR are conducted using standard operating
positions specifi ed by the FCC with the phone transmitting
at its highest certifi ed power level in all tested frequency
bands. Although SAR is determined at the highest certifi ed
power level, the actual SAR level of the phone during
operation can be well below the maximum value. Because
the phone is designed to operate at multiple power levels
and to use only the power required to reach the network,
in general, the closer you are to a wireless base station
antenna, the lower the power output.
The highest SAR value for this model phone when tested
for use at the ear is 0.96 W/kg and or body-worn/hotspot
is 1.05 W/kg. While there may be differences between SAR
levels of various phones and at various positions, they all
meet the government requirement for safe exposure.
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