Model: The locomotive has a built-in digital decoder and sound generator for operation with DCC, Selectrix, and Selectrix 2. The locomotive has a motor with a flywheel. 4 axles powered. Traction tires. The locomotive has headlights and marker lights that change over with the direction of travel. Warm white LEDs are used for the lighting. All of these lights and the engine room lighting can be controlled digitally. The locomotive also has a close coupler mechanism. All of the functions can be controlled in the digital format SX2. Length over the buffers 103 mm / 4-1/16".