Model: Comes with a digital decoder, controlled high-efficiency propulsion and sound effects module. 2 axles powered. 4 traction tires. Metal frame. Headlights will work in con-ventional operation and can be controlled digitally. Sound effects module for a whistle sound with two different pitches as well as acceleration and braking delay can be controlled digitally with the 6021 Control Unit. Length over buffers 18.2 cm / 7-3/16*.