Built in vibration sensor, it turn on the light while riding, and it turn off the light after 2 seconds when you stop riding .
Built in position sensor, it will automatically display the different designs according to the speed.
36 led light with three color( red , blue ,green ) give your bike high brightness and super-cool effect.
It shows full graphics when you riding in 10-15 km per hours.
Suitable for 24 inch wheels and above