Mode (After booting, double-click the on/off key to switch the gears,default gear is last used.)
- Red backlight : Sport mode (higher power or speed , lower battery life).
- White backlight: Standard mode (medium power or speed ,normal battery life).
- No backlight : Speed limit mode (smaller power or speed ,longer battery life).
Power switch: Long press the button. When the power is on, click once to turn on or turn off the lights.