Pennsylvania Flyer Battery O Gauge Toy Train Set with remote brings playtime to life with highly detailed locomotive, rolling stock, realistic water vapor smoke effect, durable plastic track, and track side accessories. 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. Train set requires adult assembly, 4 Aa and 5 Aaa Batteries for operation (not included).