The FL-36R is a lightweight and compact wireless* external flash. Wireless flash transmission channel settings can be controlled from the camera body, and they enable selection of flash/no flash for groups of multiple flash units. It's equipped with a 1/8 step illumination control for precision shooting, a wide-angle diffuser panel for even illumination with wide-angle lenses and a compact zoom head to accommodate lenses from wide-angle to telephoto.
(* The E3 is the only camera compatible with the Olympus Wireless RC Flash System as of October 2007. The traditional clip-on flash system is usable with any camera model.)