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• 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.
• Do not modify or remanufacture, attempt to insert foreign objects into the battery,
immerse or expose to water or other liquids, expose to fire, explosion or other
hazard.
• Avoid dropping the device or battery. If the device or battery is dropped, especially
on a hard surface, and the user suspects damage, take it to a qualified service
center for inspection.
• Improper battery use may result in a fire, explosion or other hazard.
• Promptly dispose of used batteries in accordance with local regulations.
• The device should only be connected to products that bear the USB-IF logo or
have completed the USB-IF compliance program.
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.