The JT Walthers Mainline EMD SW-1 Locomotive Southern Pacific #1004 is a 1:87 scale replica of an Electro-Motive Diesel (EMD) locomotive, featuring a black color scheme and light function. This ready-to-go pre-built model is equipped with a two-rail system control system and is DCC ready for digital operation. With its Bo-Bo wheel configuration and plastic/diecast construction, this Walthers locomotive is suitable for hobbyists aged 17 years and up, and is a great addition to any HO scale model railroad collection inspired by the Southern Pacific railroad.