The FL-300R Wireless Flash for PEN Cameras from Olympus is an easy-to-use flash that can be used with your PEN camera, either on its own or in conjunction with the camera's built-in flash. It has a guide number of 28 @ ISO 200 and can be used as a bounce flash (it tilts up 60° and down 30°). Three modes are available: TTL-Auto, AUTO, and Manual. The FL-300R will function wirelessly using the remote control function on the E-P3, E-PL3, or E-PM1. Two AAA batteries power the FL-300R. Batteries are not included.