Comes with adapter suitable for Britain and American valve, need to be equipped with extra adapter for French valve(not included).
Take off the inner insulating pater before using.
Do not mistake the positive and negative pole of the battery
Vibrate sensor, the light will turn on as soon as the wheel moves.
Easy and convenient to install
Note:
The positive pole(with letters) should be downward.
Do not take off the transparent insulating plastic sheet inside of the light shell, which is to prevent short circuit.