LED Viewer Bulbs

Super bright with very long lifetimes these bulbs fit in all the stereo viewers we have tried (Realist, Viewmaster Model D, Revere, many others). Very white light, very long life. Screw type. Unlike the other bulbs on this page the orientation of the batteries effect the how these work. If your viewer does not light up when you put this in change the poles of the batteries until it lights.