Model: Era IV. The locomotive comes with a 21-pin digital connector for the 66839 decoder that can be installed in it. The locomotive has a high-efficiency propulsion system in the boiler. 3 axles powered. 2 traction tires. A smoke generator (Märklin 7226) can be installed in the locomotive. The headlights and the smoke generator contact will work in conventional operation. The tender has NEM coupler pockets with a guide mechanism. Length over the buffers 277 mm / 8-15/16".