EMD E7A Details The factory installed Quantum sound system with dual speakers will feature the following: Dual Diesel Engine Sounds Horn Bell Squealing brakes Doppler effect Air let off (in neutral) Headlight (dim head light in neutral) Slave (mutes whistle and bell for double heading) Mechanical features will include: Powerful 5-pole can motor with flywheel Die Cast Frame Many exceptional prototypical added-on details Prototypical cab interior Operating headlight Directional backup light Lighted number boards Operating mars light where applicable Authentic paint scheme and correct locomotive numbers Magnetic knuckle coupler RP-25 contour on drive wheels Will operate on Code 70, 83 and 100 rail Can be operated on minimum 18" radius curves