Model: The locomotive comes with an mfx decoder with a multiple function sound generator. Controlled high-efficiency propulsion with 2 motors. 6 axles powered. This locomotive can be run with AC power, DC power, Märklin Digital, and Märklin Systems. The headlights / marker lights change over with the direction of travel, will work in conventional operation and can be controlled digitally. The engineer's cab lighting, electric locomotive operating sounds, horn, and the direct control (acceleration and braking delay) can be controlled with a Control Unit or Märklin Systems. The sounds of the locomotive being coupled to a train (buffers striking one another), compressed air leaking, station announcements in Swiss German, and the sound of brakes squealing can be controlled with Märklin Systems. Two additional sounds (blower motors and compressor) can be controlled with the Central Station. The locomotive has a three-part body with finely detailed running gear. The running gear has cast drive rods and side rods. There are two grab irons on each of the hoods as well as separately applied walkover plates. There are 4 doors that can be opened. The roofs have many separately applied details as well as 2 older design working pantographs. The buffer beams have the older design spring-loaded buffers. The reproduction prototype couplers installed at the factory can be replaced by 2 claw couplers included with the locomotive. Mininum radius for operation 1,020 mm / 40-3/16". Length over the buffers 60.6 cm / 23-7/8".