318AF Digital Slave Flash For Use For The Olympus SP-570, SP-565, SP-560, S550, SP-510, SP-500, SP-350, SP-320, SP-310, C-5050 Digital Cameras Includes Flash Bracket Stylish, Compact Design Built-in Digital Slave Auto Pre-flash Sensor , Ultra-Light Weight Uses 2AA Batteries (not included) , 1 Year Limited Warranty