Model: The frame and body are constructed of die-cast metal. The locomotive has a 21-pin digital connector. It also has a special motor with a flywheel, centrally mounted. 4 axles powered through cardan shafts. Traction tires. The headlights are warm white LEDs. They will work in conventional operation and can be controlled digitally. The headlights at Engineer's Cab 1 and 2 can be shut off in digital operation when the 66849 decoder is used. The locomotive has separately applied metal grab irons on the sides and ends. It also has a detailed buffer beam and NEM coupler pockets. Length over the buffers 18.9 cm / 7-7/16".