The Bachmann Spectrum HO Train Transformer is a ready-to-go pre-built unit designed for model railroads and trains enthusiasts. This gray transformer is 5 inches in length and operates on DC power with a voltage of 120V. Manufactured in 2009, this analog control system transformer is made of plastic and steel, suitable for HO scale model trains. Created by the well-known brand Bachmann, this unit is perfect for adults aged 17 years and up who enjoy collecting and operating model trains. New has no box, Will be packed and well protected. Transformer com from a set that broken up.