Appendix
100
Prevention of Hearing Damage
Using a headset at high volume can damage your hearing. To
reduce the risk of damage to hearing, lower the headset volume
to a safe and comfortable level.
Safety of Children
Comply with all precautions with regard to children's safety.
Letting the child play with your device or its accessories, which
may include parts that can be detached from the device, may
be dangerous, as it may present a choking hazard. Ensure that
small children are kept away from the device and accessories.
Accessories
Choose only batteries, chargers, and accessories approved for
use with this model by the device manufacturer. The use of any
other type of battery, charger, or accessory may invalidate any
warranty for the device, may be in violation of local rules or laws,
and may be dangerous. Please contact your dealer for
information about the availability of approved batteries,
chargers, and accessories in your area.
Battery and Charger
• Unplug the charger from the electrical plug and the device
when not in use.
• The battery can be charged and discharged hundreds of
times before it eventually wears out. When the standby time
and the talk time are shorter than the normal time, replace the
battery.
• Use the AC power supply defined in the specifications of the
charger. An improper power voltage may cause a fire or a
malfunction of the charger.
• Do not connect two poles of the battery with conductors, such
as metal materials, keys, or jewelries. Otherwise, the battery
