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Keep the ambient temperature between 0°C and 40°C while the
device is being charged. Keep the ambient temperature between
0°C to 40°C for using the device powered by a battery.
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
Use the accessories delivered only by the manufacturer. Using
accessories of other manufacturers or vendors with this device
model may invalidate any approval or warranty applicable to the
device, result in the non-operation of the device, and cause danger.
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.
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