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• 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.
