User manual

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 may be
short-circuited and may cause injuries and burns on your body.
If battery electrolyte leaks out, ensure that the electrolyte does
not touch your skin and eyes. When the electrolyte touches your skin
or splashes into your eyes, wash your eyes with clean water
immediately and consult a doctor.
If there is a case of battery deformation, color change, or
abnormal heating while you charge or store the battery, remove the
battery immediately and stop using it. Otherwise, it may lead to
battery leakage, overheating, explosion, or fire.
If the power cable is damaged (for example, the cord is exposed
or broken), or the plug loosens, stop using the cable at once.
Otherwise, it may lead to an electric shock, a short circuit of the
charger, or a fire.
Do not dispose of batteries in fire as they may explode. Batteries
may also explode if damaged.