Watch your child"s imagination grow with this set of colorful gears. This 105-piece set includes unique pieces for innovative building, including a remote-controlled infrared motor with a 25" range, a chrome robot head with flashing lights, fiber optics, detachable claws, a large light gear and more. Color-coded instructions for building four motorized models are included, or children can also design their own models. Requires 7 "AA" batteries (not included).