Launch control mode allows rider to use handlebar button (included) to set optimal RPM level you want to reach just before race. LEDs will turn on as throttle is twisted. When optimal RPM range is reached the LEDs will all light up and start blinking with over-revving. RPM mode switches from LC mode to RPM dash mode after start of the race. Shift light point is set directly through the button on the handlebar. Water, mud and stone proof. Compatible with all stock bike. Easy to Install.