SX-450, SX-550, SX-650, SX-750, SX-850, SX-950, SX-1050, SX-1250SX-580, SX-680, SX-780, SX-880, SX-980, SX-1080, SX-1280, SX-1980
SX-3400, SX-3500, SX-3600, SX-3700, SX-3800, SX-3900
SA-9500
Specs:
Voltage: 8v AC/DC (they will work fine at 6.3v, 7v, or 8v)
Current Draw: 20mA
Color: Warm White
Wire Length: 12 inches (305mm)
Diameter: 4mm
Polarity: Non-polar
They will work on lots of other equipment as well. These are brighter than the original incandescents, so you'll want to replace all of them. I do have similar 8v 4mm incandescent bulbs listed as well. Please see my pictures for details.