The Erector Set Hummer has a radio controlled 6v motor w/ recharger. The special remote has built in tool holders and comes with a 9v battery. The remote allows the built model to run forward/backward and left/right. Includes flexible metal pieces which provides a more realistic looking model. The set comes with 600+ parts and can build 3 different models. Batteries and recharger included. Make a great gift for anyone who loves Erector Sets, Hummers and building thing!