User manual

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 battery, and charger are not water-resistant. Keep them dry.
Protect the device, battery, and charger from water or vapor. Do not
touch 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 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.
If the device screen is broken by colliding with hard objects, do
not touch or try to remove the broken part. In this case, stop using the
device immediately, and then contact an authorized service center in
time.
Emergency Call