Model: Heavy four-axle locomotive for passenger or freight cars. All 4 axles powered by means of cardan shafts with 1 central gear box and 4 transfer gear boxes. 2 wheels equipped with traction tires. The locomotive has a built-in high-efficiency electronic circuit for operation with DC power, AC power or Märklin Digital/Delta. The headlights / marker lights change over with the direction of travel and can controlled digitally along with the lighting for the engineer's cabs. During operation with DC or AC power the headlights / marker lights and the cab lights will be on all of the time and the brightness of these lights depends on the voltage present in the track. The built-in diesel locomotive sound effects circuit (the sound of one or two motors during startup, at idle, and at speed that can be turned on and off and the separately activated sound of a horn), can be used only with digital operation. A figure of a locomotive engineer is in the front cab. One of the most powerful models in the Märklin 1 program. Minimum radius for operation 1,020 mm / 40-3/16". Length over the buffers 57.7 cm / 22-11/16".