An all-in-one set that you can play immediately with just the included items.The range of play can be freely expanded by adding rails and structures (sold separately).The minimum mileage of the vehicle is R45.Uses 2 AA batteries (sold separately).Set includes,Z Shorty 0 Series Kodama x 1 setZ Shorty Power Chassis Shinkansen Type x 1Z Shorty Trailer Chassis Shinkansen Type x 2Instruction manual x 1Straight rail 110mm x 2Curved rail R45-45 x 8Z Shorty Dedicated Train Controller RC-004 1Z Shorty Dedicated Relayer x 1