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67User Guide
• Promptly dispose of used batteries in accordance with local regulations.
• The device should only be connected to products that bear the USBIF logo or have completed
the USB-IF compliance program.
• Only use the battery with a charging system that has been qualifi ed with the system per this
standard, IEEE-Std-1725. Use of an unqualifi ed battery or charger may present a risk of fi re,
explosion, leakage, or other hazard.
• Replace the battery only with another battery that has been qualifi ed with the system per this
standard, IEEE-Std-1725. Use of an unqualifi ed battery may present a risk of fi re, explosion,
leakage or other hazard.
• Do not disassemble or open, crush, bend or deform, puncture or shred the battery. Other-
wise, it may lead to electrolyte leakage, overheating, fi re, or explosion.
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, overheat-
ing, fi re, or explosion.
• Do not place magnetic storage media such as magnetic cards and fl oppy 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 tem-
perature. Otherwise, they may not function properly and may lead to a fi re 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 dam-
aged or a fi re 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 acces-
sories is invalid and the manufacturer is not liable to pay for the damage.
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