Easy to use controls make the EXD400 desirable where finite control is required over the output settings along with 400 watt seconds output. Versatility is a buzz word often used to describe a studio strobe, here its certainly is the case in this compact 400 watt second head. Each head features, user changeable flash tubes, switchable modeling lamps, fan cooling for prolonged use and Infrared and white light sensitive light sensors and a additional easy to use rear handle allows for precise positioning. The EXD400 also features a pre set flash function to enable the head to reduce the pre focus Flash Units by some of today’s Digital compact cameras, enabling the Sync cell to correctly pick up the first, second or third flash therefore ignoring the pre-flash used for focusing. This kit comes complete with 2 EXD400 (Guide no 60m (196")@ iso 100) heads; 2 100 watt Bulbs (INT499); 2 Lighting stands (COR751); 1 100cm (36") Softbox (INT485); 1 Translucent Umbrella (INT260) and 2 Sync and power leads (CIA332).