It uses 3 lights, 2 xl motors, 2 switches, a battery box, and a medium motor. It doesn't work that well, because it's wheels go out from the center under the weight of the battery box and frame. The chassis by itself was somewhat successful though, so I give it a 3 out of 5 myself. It took about 2 days to build, and I didn't have all of the right pieces to finish the frame. But it looked alright in the end. The top part holds all of the stuff as well. The chassis was able to fall about 3 feet without breaking, but the frame was basically destroyed from it.