An all-in-one set that you can play with just the enclosed product.The controller is simple and lightweight RC-004. Operates with 2 AA alkaline batteries (sold separately).Set includes,Z Shorty 923 Doctor Yellow (T5 organization) x 1Power chassis Shinkansen type x 1Trailer chassis Shinkansen type x 2Straight rail 110mm x 2Curve rail R45-45 x 8Z Shorty dedicated relayer x 1Z Shorty Train Controller RC-004 x 1