The Rail King MTH Santa Fe F-3 ABA Diesel Set with Proto Sound is a highly detailed and accurately modeled replica of the Santa Fe locomotives. This set includes an F-3 ABA diesel locomotive in 1:48 scale, featuring realistic sounds and details. Designed for O gauge model railroads, this locomotive operates on a three-rail system and comes ready to go with an analog control system. model is perfect for transportation-themed layouts, bringing a piece of history and nostalgia to your train collection.equipped with a brand new BCR battery replacement