Model: Two-axle tank locomotive. The rear axle is equipped with 2 traction tires and is powered directly from the motor; the front axle is powered through side rods. The locomotive has detailed, multi-part valve gear. It has a built-in electronic circuit for operation with AC power or Märklin Delta/Digital. The mode of operation is set manually on the circuit board. A replacement circuit board is included for operating the locomotive with DC power. The locomotive has a built-in smoke generator that can be turned on and off with a switch in the engineer's cab. Minimum radius for operation 600 mm / 23-5/8". Length over the buffers 22.0 cm / 8-11/16".