The Lionel 6-21951 O Gauge World War II Troop Train Steam Train Set is a limited edition model railroad set featuring a green diecast steam locomotive from the year 2000. It is designed in O scale with AC power type and analog control system, making it a detailed and realistic addition to any model railroad collection. This set includes light and sound functions, as well as painted details to enhance the authenticity of the World War II troop train theme.