Incandescent Bulb for AC Stereo Viewers such as the Realist Green Button or Kodaslide II viewers. The original 8 watt bulb was discontinued decades ago. This 7 watt bulb is brighter than the original, and happily welcomed as a replacement, but, alas this bulb has been discontinued too, and availability in the future is questionable. As incandescent bulbs have shorter use lives, yet store without aging, stocking up with a spare bulb or two is recommended.