Olympus FL-36 Electronic Flash for SP series, C7070, E1, E300 & E500 Cameras Newly designed energy circuit improves recharge rates and enables the flash to operate on just two AA batteries or one CR 3-volt Lithium battery A cost-effective, full-featured alternative to the the larger FL-50 Specifically designed for digital with an accurate 1/8 step illumination control Built-in wide-angle diffuser panel allows the flash to provide even illumination with wide angle lenses Compact, lightweight, and extremely portable