Huawei W1 Quick Start Manual page 23

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.
> 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.