temperature range of -40
°
C~+70
°
C. Extreme temperatures can affect the device's
performance and service life.
7. Please use an original rechargeable lithium battery. Low-quality batteries will affect the
performance and service life of the device, and may even have the danger of explosion.
8. Although the product has been tested to withstand harsh operating environments, do use
the product in an improper manner.
9. Please do not disassemble this product. In case of failure, please send to our authorized
service centres to proceed with repairs.
10. After the device has reached the end of its service life, please discard in a proper way to
avoid environmental pollution.
11. When replacing the battery or during the use of an external power supply, shut down the
device completely before removing the battery or disconnecting the external power supply to
prevent damage.
12. This product is a Class B product, which may cause radio interference. The user may be
required to take necessary preventive measures.
Battery Instructions
1. This product uses a rechargeable lithium battery as a power source. When the power is
low, please charge the battery. To maintain battery life, it is recommended to deplete the
battery's power before charging.
2. When the battery charger is not in use, please remove it from the power supply. Do not
connect the charger to the battery for more than one week. Excessive charging will shorten the
battery life.
3. Temperature affects the battery charging limit. Therefore, the battery may need to be
cooled or warmed up before charging.
4. Please use the battery for its original intended purpose to prevent short-circuiting the
battery. A short circuit will occur when a conductive material connects the battery
’
s positive and
negative terminals.
5. Do not use a battery that is damaged.
6. Placing the battery in extremely cold or hot places will lead to shortened battery life.
Exposing the battery to extreme temperatures may cause the phone to malfunction, even if the
battery is fully charged.
7. Do not put the battery in a fire. Please discard the battery in a proper manner or take the
battery to a battery recycling station. Please dispose waste batteries in accordance with local
laws and regulations.
NOTICE:
The SAR limit of Europe is 2.0 W/kg. Device types UT
5
0 has also been tested against this SAR limit.
The highest SAR value reported under this standard during product certification for use on the
body is 0.675W/kg This device was tested for typical body - worn operations with the back of
the handset kept 0 cm from the body. To maintain compliance with RF exposure requirements,
