Handle line length is 3 m or 5 m, there are four keys and a rocker, the four keys are: start, stop, forward and backward, rocker is die carts steering control, the joystick to the left, on the left, a handle to the right to move, die carts turn right to move forward in the direction of the direction of motor, if you want to stop the carts, you can let go forward or back button or press the