Olympus FL-900R Flashgun

With a dust, splash, and freeze-proof construction to match the weatherproofing of Olympus OM-D cameras, the Olympus FL-900R Flashgun is a high-intensity flash with a maximum guide number of 57. Perfect for lenses with a focal length of 12mm or higher, it is equipped with a wireless mode that enables multi-flash photography with up to 4 flash groups. Furthermore, it has an LED light for movies.

Price: 549.99 from Wex Photo Video