Do not leave your device, battery, and charger in a place with an extreme high or
low temperature. Otherwise, they may not function properly and may lead to a fire or
an explosion. When the temperature is lower than 0°C, performance of the battery is
affected.
Do not place sharp metal objects such as pins near the earpiece. The earpiece
may attract these objects and hurt you when you are using the device.
Before you clean or maintain the device, power off the device and disconnect it
from the charger.
Do not use any chemical detergent, powder, or other chemical agents (such as
alcohol and benzene) to clean the device and the charger. Otherwise, parts of the device
may be damaged or a fire can be caused. You can clean the device and the charger with
a piece of damp and soft antistatic cloth.
Do not dismantle the device or accessories. Otherwise, the warranty on the
device and accessories is invalid and the manufacturer is not liable to pay for the
damage.
If the device screen is broken by colliding with hard objects, do not touch or try
to remove the broken part. In this case, stop using the device immediately, and then
contact an authorized service center in time.
Emergency Call
You can use your device for emergency calls in the service area. The connection,
however, cannot be guaranteed in all conditions. You should not rely solely on the
device for essential communications.
Certification Information (SAR)
This device meets guidelines for exposure to radio waves. Your device is a low-‐power
radio transmitter and receiver. As recommended by international guidelines, the device
is designed not to exceed the limits for exposure to radio waves. These guidelines were
developed by the independent scientific organization International Commission on Non-‐
Ionizing Radiation Protection (ICNIRP)
and include safety measures designed to ensure safety for all users, regardless of age
and health. The Specific Absorption Rate (SAR) is the unit of
measurement for the amount of radio frequency energy absorbed by the body when
using a device. The SAR value is determined at the highest certified power level in
laboratory conditions, but the actual SAR level of the device when being operated can
be well below the value. This is because the device is designed to use the minimum
power required to reach the network.
The SAR limit adopted by USA and Canada is 1.6 watts/ kilogram (W/kg) averaged over
one gram of tissue. The highest SAR value reported to the FCC and IC for this device type
when tested for use at the ear is 0.738 W/kg, and when properly worn on the body is
0.561 W/kg.
The SAR limit also adopted by Europe is 2.0 W/kg averaged over 10 grams of tissue. The
highest SAR value for this device type when tested at the ear is 0.547 W/kg, and when
properly worn on the body is 0.346 W/kg.
