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circuit of the charger, or a fire.
Do not dispose of batteries in fire as they may explode.
Batteries may also explode if damaged.
Cleaning and Maintenance
The device, battery, and charger are not water-resistant.
Keep them dry. Protect the device, battery, and charger from
water or vapor. Do not touch the device or the charger with
a wet hand. Otherwise, it may lead to a short circuit, a
malfunction of the device, and an electric shock to the user.
Do not place your device, battery, and charger in places
where they can get damaged because of collision. Otherwise,
it may lead to battery leakage, device malfunction,
overheating, fire, or explosion.
Do not place magnetic storage media such as magnetic cards
and floppy disks near the device. Radiation from the device
may erase the information stored on them.
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
