With a blue engine, this battery powered rolling-stock set amusingly wiggles and wobbles! Switch on the blue engine with its two carriages magnetically attached and watch the cargo in the red car bounce up and down while the pumps in the other car spin round and round. Hape’s Battery Powered Rolling-Stock Set turns classic train-play into a riveting adventure, kids will want to watch and play with for hours. Perfect brightly colored set that is fully compatible with standard magnetic train sets.