Model: The locomotive comes with a digital decoder and high-efficiency propulsion. It has a metal frame. 2 axles powered. 4 traction tires. Metal grab irons. Scale narrow hoods. The headlights will work in conventional operation and can be controlled digitally. The acceleration and braking delay can be controlled digitally with the 6021 Control Unit. Length over the buffers 14.1 cm / 5-9/16".