Olympus SRF-11 TTL Ring Flash Set for Olympus Digital Cameras This Item Includes: Olympus SRF-11 TTL FC-01 Macro Flash Controller - RF-11 Ring Flash Head - Carrying Case - Olympus 1 Year Warranty Olympus SRF-11 TTL Ring Flash Set, Guide Number of 26 Feet,(11 Meters) at ISO 100