The Holga Holgon MF Flash is a very capable shoe-mounted unit for any Holga cameras. It has a guide number of 21' at ISO 100 and can tilt upward 90° for softer bounce lighting. Also, it has both a Single Flash and a Multiple Flash mode. The Multiple Flash mode works when the camera is set to bulb mode and fires the flash two times a second for the duration of the exposure in order to track moving subjects. Additionally, it has a PC sync terminal for off-camera use and runs on 4 AA batteries, which provide a recycle time of 0.5 seconds.