Locomotive w/Sound Powered -- EMD F7A & B ATSF Passenger

Ready-to-run locomotives with special sound system installed and constant brightness lighting. The sound system is entirely contained in the locomotives, does not require a special power supply and can be used on any conventionally wired layout. Sound is produced by electronics and a speaker that create the whine and clatter of various diesel types. Sound is adjustable and changes as the engine accelerates and decelerates.