Lionel Trains The Polar Express LionChief Ready to Run Set - Indoor Games and Toys for Boys - Surprise Your Kid with This Realistic Detailed Train Toy Set - Reverse and Forward Motion - Powered By 3 Alkaline AAA - Gift for Christmas Vehicle Motions: Reverse and Forward, Scale: O Gauge Power Source: Batteries Battery: Required, not included, 3 Alkaline AAA Assembly Details: assembly required Dimensions: 8.25 " H x 20.0 " W x 22.25 " L, Product Weight: 18.08 Lb.