Lionel Percy Remote Control O-Gauge Train Set Electric locomotive controlled by remote Uniquely colored remote controller with forward and reverse speed control knob, whistle/horn, bell, and announcement buttons (requires three AAA alkaline batteries, not included) RailSounds RC sound system with steam chuffing and background sounds, whistle/horn, bell, and user-activated announcement Moving eyes on the locomotive Powerful maintenance-free motor Traction tire Removable roofs Gauge: Traditional O Gauge, Dimensions: Length 7