This detailed EMD F7A model features full Paragon4 sound and DCC for realistic sound and motor control. The Paragon4 sound system works with all Broadway Limited Rolling Thunder(TM) advanced sound systems. Other features of this locomotive include a heavy die cast chassis, smooth-running flywheel-equipped drive, directional lighting and magnetic knuckle couplers. It can be operated on all DCC systems as well as on standard DC railroads (with limited sound functionality). It has wheels profiled to operate on Code 55 and larger rail and curves of 9-3/4 radius and larger are recommended.