Intricately Detailed, Durable ABS Body Die-Cast Truck Sides, Pilots and Fuel Tank Metal Chassis Metal Handrails and Horn Authentic Paint Scheme Metal Wheels, Axles and Gears (2) Remote-Controlled Proto-Couplers Prototypical Rule 17 Lighting Directionally Controlled Constant Voltage LED Headlights (2) Precision Flywheel-Equipped Motors Operating ProtoSmoke Diesel Exhaust Onboard DCC/DCS Decoder Locomotive Speed Control In Scale MPH Increments 1:48 Scale Proportions Proto-Sound 3.0 With The Digital Command System Featuring: Freight Yard Proto-Effects Unit Measures:14 1/2” x 2 1/2” x 3 3/4” Operates On O-27 Curves Diesel DCC Features