Model: The locomotive comes with a digital decoder, high-efficiency propulsion system C-sine motor, running gear lights, and a sound effects generator. 3 axles powered. 2 traction tires. The locomotive is ready for installation of the 7226 smoke generator. The headlights and smoke generator will work in conventional operation and can be controlled digitally. The steam locomotive sound effects and running gear lights can be controlled digitally with the 6021 Control Unit. Length over the buffers 27.7 cm / 10-29/32".