Model: The locomotive has an mfx+ digital decoder and extensive light and sound functions. It also has controlled high-efficiency propulsion with a flywheel, mounted in the boiler. Three axles powered. Traction tires. The locomotive and tender are constructed mostly of metal. The locomotive has a factory-installed smoke generator. The headlights on the locomotive and tender change over with the direction of travel. They and the built-in smoke unit will work in conventional operation and can be controlled digitally. The emergency light on the smoke box door can be controlled separately in digital operation. There is also cab lighting and flickering firelight in the firebox that can be controlled separately in digital operation. Maintenance-free warm white and red LEDs are used for the lighting. There is an adjustable coupling with a guide mechanism between the locomotive and tender. The rear of the tender has a close coupler with a guide mechanism and an NEM coupler pocket. The minimum radius for operation is 437.5 mm / 17-1/4". Brake hoses, imitation prototype couplers, and signal holders are included. Length over the buffers approximately 28.4 cm / 11-3/16".