Celebrate the wonder of this holiday season with the North Pole Express Battery Operated O Gauge Toy Train Set with remote and Water-Vapor Smoke Effects. Lionel Battery O Gauge Train Sets include a battery-powered locomotive controlled by remote, an exclusive new Battery O Gauge 2-Rail Track System, and features Water-Vapor Smoke Effects. Locomotive and Rolling stock are capable of running on Lionel O Gauge 3-Rail Fast Track, however does not require track power. Lionel O Gauge Fast Track is sold separately not included. Train set requires adult assembly, 4 Aa and 3 Aaa Batteries for operation (not included).