The MTH 20-2710-1 BNSF SD70MAC is a Ready-to-Go Pre-built model with a scale of 1:48 with digital command system. This Diesel Locomotive features a multicolor pumpkin color scheme, diecast construction, and operates on the Three-Rail System that can convert to a 2-rail. With its analog control system, this model is designed for collectors and hobbyists aged 17 years and up. It includes light and sound functions, making it a realistic addition to any model railroad layout. This unit was part of an estate of a long time collector and stored for several years. Powers up and runs, but functions not tested. As I am not a train collector, I have limited knowledge of model trains.