This detailed P5a Electric features full Paragon3 sound and DCC for realistic sound and motor control complete with back EMF for smooth slow speeds. The Paragon3 sound system works with all Broadway Limited Rolling Thunder(TM) advanced sound systems. Other features include a heavy die cast body and chassis; smooth-running drive, applied details; directional warm white LED lighting and magnetic knuckle couplers. The HO Scale P5a can be operated on all DCC systems as well as on standard DC railroads (with limited sound functionality). This model has wheels profiled to operate on Code 70 and larger rail and curves of 18" radius or larger are recommended. The detailed electric comes in multiple roadnumbers for each railroad when appropriate. The Class P5a Electric is one of many Broadway Limited HO Scale Paragon3 locomotives.