Model: The locomotive comes with an mfx digital decoder, controlled, high-efficiency Softdrive Sine propulsion, and a sound effects generator. The locomotive has a compact-design motor. 2 axles powered. Traction tires. The headlights / marker lights are maintenance-free LED's; they will work in conventional operation and can be controlled digitally. The white long distance headlights and a horn sound effect as well as the acceleration and braking delay can be controlled with a 6021 Control Unit or with Märklin Systems. The engineer's cabs have interior details. The locomotive has separately applied metal grab irons. Length over the buffers 22.5 cm / 8-7/8".