• Chassis made of die-cast metal• All wheels driven, 2 x 2 rubber tires• Centred motor with 2 large flywheels for smooth running• Weight: 500 g (which gives enough traction power to pull large trains)• Close coupler mechanisms at both ends• NEM 362 coupler pockets (can be disassembled for display)• Lower lamps lit depending on direction in analogue mode (Golden white and red LED)• Lamps controllable in digital mode• Profile engraved in lamp glasses• Digital MTC 21-pin socket (NEM 660)• Sound chamber and contacts for 15 x 11 mm “sugar cube” speaker pre-installed.To fit the loco with sound you just need a 21-pin decoder according to NEM 660 (ESU, Doehler & Haass, Zimo or similar) and a 15 x 11 mm (8 Ohm) “sugar cube” speaker. No cables and no soldering required!• Ventilators on the roof covered with fine but robust photo-etched metal grill• All separately fitted details pre-installed (no accessory bag) and ready to play.• Length over buffers: 232 mm• Min. radius: 356.5 mm (for even tighter radiuses the decorative front parts limiting the coupler movement can be unplugged)