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• The device should only be connected to products that bear the USB-IF logo or
have completed the USB-IF compliance program.
• Only use the battery with a charging system that has been qualified with the system
per this standard, IEEE-Std-1725-2006. Use of an unqualified battery or charger
may present a risk of fire, explosion, leakage, or other hazard.
• Replace the battery only with another battery that has been qualified with the
system per this standard, IEEE-Std-1725-2006. Use of an unqualified battery may
present a risk of fire, explosion, leakage or other hazard.
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 32°F (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.