The LEB-004 is a 2500/4000Watt electronic ballast can handle flicker-free shooting up to 10000fps.  The LEB-004 automatically identifies whether the lamp head is 2500W or 4000W. With its durable coating and industrial connectors, the 7m long head to ballast cable enables it to endure the most demanding environments with ease. Best of all, not only is it much smaller and lighter than the standard magnetic ballast, but it also increases bulb life by at least 20%.