Pre-wired factory-installed 8-pin socket for the DCC decoder installation of your choice. Decoders Sold Separately Compatible with Conventional DC-Powered Layouts Precision motor with dual flywheels, die-cast frame, all-wheel drive, operating LED double headlight per prototype, RP25 wheel contours, and E-Z Mate Mark II couplers. Performs best on 28″ radius curves or greater HO Scale 1:87