supports IR remote TTL of Canon, Nikon, Pentax, Four Thirds, Micro Four Thirds (requires firmware v3 or higher), and Sony
wireless manual exposure mode with “learning” capability to ignore on-camera pre-flashes
manual mode the total output can be set to from full power to 1/2, 1/4, 1/8, 1/16, 1/32 or 1/64th full power
clip on plastic diffuser
2 x AAA batteries
one of the lightest “ring flashes”
each flash unit is able to be angled by 20deg within the ring frame and variable output from each flash via the ratio setting
modeling light
AF assist light
adapters to fit lens filter threads of 52mm, 55mm and 58mm;
adapter rings in the sizes 62, 67 and 72 mm are optionally available
comes with a on-camera flash IR pass clip to prevent that flash causing shadows on macro subjects
PC sync outlet
USB port for firmware updates
GN 15m ISO 100
only weighs 190g excl. batteries
standard 1/4-20 tripod socket on the bottom for tripod mounting
generally sells for $US399
it's size, weight and ring adapter sizes make it well suited to Micro Four Thirds, and as a fill in flash, it is to be preferred over the Olympus Ring Flash, as it is lighter, does not occupy the hotshoe and thus you can still use remote TTL flashes as your main and kicker flashes.
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issues:
lighting from above with the flash diffuser on is still quite harsh for macro work
angle of flash is limited to 50mm focal length lenses on APS-C cameras
requires latest firmware to work with Micro Four Thirds