The Minolta DUOFIT s miniature bulb flashgun has two "duo" features:

  • It fits on a camera with old style accessory shoe and flash cable connector as well as on one with hot shoe.
  • It can fire type AG-3B flashbulbs as well as AG-1 and AG-1B bulbs.

At film speed 100 ASA with AG-3B or AG-1 bulbs it reaches as far as 20 metres, with AG-1B bulbs only 14 metres. It needs a V 74 PX battery (15 Volt). A special feature is the bulb release button that lets the used hot bulb jump out of the device.