The Electric Cannon power element takes movement and action to a new level. By activating the action stone, balls gain momentum. How far will the balls roll? One track, countless possibilities. With the electronic GraviTrax Power elements, the player controls the movement of the balls. The controller can be used to activate the switch, starter or lever power elements at the touch of a button. (Not included in the product.) Three colour channels are activated when building the ball track: red, green or blue. By skilfully installing, combining and programming, the tracks are always created. For even more action and much longer running times. With GraviTrax, children, teenagers and adults don't just build simple marble runs. They create unique marble run worlds. By freely designing the marble runs and exploring the rolling behaviour of the marbles, the understanding of science is sharpened and gravity can be experienced at first hand.