This is an amazing clean Slot Car Track. This is a very unique Slot car set. They can be run on a 12 volt battery or 12 volt DC Power. This did not come with a transformer. This set is in amazing condition. The track is metal/Chrome. The cars are amazing clean with original windshields. The contacts are loose. The instructions, track accessories are all looking to be there. The box is also in great shape. The controls, terminals, and original wrappers all seem to be intact. The chrome track is in excellent condition. This was not tested or put together. Everything looks near mint but tou will need to get it running. There is not transformer and I believe this is 12 volt.