FEATURES: Operating pantographs Die-cast chassis Dual flywheels Operating head lights and marker lights which are directional Full cab interior with painted crew members Separately-applied wire grab irons Astounding roof detail Gold versions will be equipped with ESU sound Silver Sound Ready Atlas Silver Sound Ready models are equipped with a speaker for easy conversion to sound with the addition of a decoder. Atlas Master Series Gold Additional Features: Supports all DCC-programming modes Flexible mapping of function keys F0 to F31 . Follows all NMRA DCC standards and recommended practices. ESU LokSound Functionality Features: Over 20 sound effects are available, including engine start-up and shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes and more. There are 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals. Manual & Automatic Notching modes with the ability to change modes on the fly are provided for true realism.