Sony Ericsson Walkman W800 User Manual page 94

Important information
Efficient use
Hold your mobile phone as you would any
other phone. Do not cover the top of the
phone when in use, as this affects call
quality and may cause the phone to operate
at a higher power level than needed, thus
shortening talk and standby times.
Radio frequency (RF) exposure and
SAR
Your mobile phone is a low-power radio
transmitter and receiver. When it is turned
on, it emits low levels of radio frequency
energy (also known as radio waves or radio
frequency fields).
Governments around the world have
adopted comprehensive international safety
guidelines, developed by scientific
organizations, e.g. ICNIRP (International
Commission on Non-Ionizing Radiation
Protection) and IEEE (The Institute of
Electrical and Electronics Engineers Inc.)
through periodic and thorough evaluation of
scientific studies. These guidelines establish
permitted levels of radio wave exposure for
the general population. The levels include a
safety margin designed to assure the safety
of all persons, regardless of age and health,
and to account for any variations in
measurements.
Specific Absorption Rate (SAR) is the unit of
measurement for the amount of radio
frequency energy absorbed by the body
when using a mobile phone. The SAR value
is determined at the highest certified power
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level in laboratory conditions, but the actual
SAR level of the mobile phone while
operating can be well below this value.
This is because the mobile phone is
designed to use the minimum power
required to reach the network.
Variations in SAR below the radio frequency
exposure guidelines do not mean that there
are variations in safety. While there may be
differences in SAR levels among mobile
phones, all Sony Ericsson mobile phone
models are designed to meet radio
frequency exposure guidelines.
A separate leaflet with SAR information for
this mobile phone model is included with
the material that comes with this mobile
phone. This information can also be found,
together with more information on radio
frequency exposure and SAR, on
www.SonyEricsson.com/cn
Driving
Please check if local laws and regulations of
your country/region restrict the use of
mobile phones while driving or require
drivers to use handsfree solutions. We
recommend that you use only Sony
Ericsson handsfree solutions intended for
use with your product. Please note that
because of possible interference to
electronic equipment, some vehicle
manufacturers forbid the use of mobile
phones in their vehicles unless a handsfree
kit with an external antenna supports the
installation.
.