Function Declaration:
1. Long press the power switch for 3 seconds to turn on the power, red lighjt changes from weak to be bright,
at the same time, fast flashing with 0.5 seconds gap means power on mode.
2. Short press once(the first gear) is blasting flashing.
3. Short press at the 2nd time(the 2nd gear) is 1-second slow flashing.
4. Short press at the 3rd time(the 3rd gear) is continuous light(during this mode, only with function of braking light, no
daylight sensing light, not auto motion light, also not auto off function of 30 seconds motionless, and it continuously
lighting until power exhausted.)
5. Long press switch for 6 seconds, red light fast flashing for 2 times, then turn off the power.

SOS Function:
When your bike slopes to be 40 degree of falling dowm, SOS flashing mode will be automatically on,
and it will be off after your bike goes back the original position.

Features:
- When braking, it will be automatically switching to be high bright light for 5 seconds(brake light brightness
will be double than normal lighting mode)
- During the weak lilght circumstance, any motion happened to your bike, the light will be automatically on in the defaulted mode,
the 1st gear or the 2nd gear mode, and it will be automatically off under motionless for 30 seconds.
Riding under weak light circumstance, the light will be auto switchable to be flashing mode after brake light turning off.
- During the strong light circumstance, it is only working for braking lilght, there will be no any lighting among the defaulted mode,
the 1st gear or the 2nd gear mode.
- During charging, the red LED indicator will be on, it will be off afher full charged.
- Low power indicator:when you find the light becomes weak, and the light auto switch from weak to strong by breathing flashing,
it means you need to charge the battery.