Features: Scale dimensions and details Separately applied wire grab irons Brass horn and bell details Accurate painting and lettering Directional LED lighting 2-Rail locos have fixed pilots and scale couplers Grille detail Minimum diameter curve: O-31 (3-rail) Minimum radius curve: 36" (2-rail) TMCC Features: Lionel® TrainMaster Command Equipped featuring RailSounds™ digital sound system, (including horn, bell diesel-roar sounds, etc.), Crew Talk® (in command), and more RailSounds™ operates in both conventional and command modes in 3-Rail Operating electro-couplers