The Sea Dragon Duo Flash Set includes two Sea Dragon Universal Flash strobe heads, Flex-Connect Dual Tray and two Flex-Connect Grips. The set provides powerful, yet controllable light to bring out amazing colors in your underwater photos. The included diffusers reduce backscatter and eliminate shadows with nearly two times the light coverage over the single Sea Dragon strobe. The Duo Flash set is universally compatible with all underwater cameras with an internal flash and standard tripod mount. Because of the added second strobe, it is highly recommended to add several optional Flex-Connect flex arms to the set to spread the light out for even and thorough illumination of the subject.