The SP200 Strobe / Flash Head produces a superb warm light that will bathe your subjects in soft light. These are one of the best strobes we offer. They are guaranteed to give you years of service. They are perfect for commercial studios, location photographers as well as advanced amateurs. You can use this strobe for a main light, fill light, back light, or hair light. The SP200 incorporates digital cell control technology and a state of the art LCD display. The flashtube is removable and they were built to prevent pink eye. Similar strobes strobe sell in professional camera stores for over $399 each. SPECIFICATIONS: Power Input: AC110-130 volt, 60 Hz AC200-240 volt, 50 Hz. Flash Power: 200ws (joule) in full. Guide No.: GN45. Color Temperature: 5600K. Flash-tube Lifetime: over 8,000 typical flashing. Power Setting: 1/32 to full continuously. Recharge Time: 0.5-2 seconds in full. Flashing Duration: 1/600 sec. @t=0.1; 1/1000 sec. @t=0.5. Effective Photo Sensor Distance: less than 10m. Triggering Voltage: 5V DC. Triggering: Photo Sensor, sync cords, test button. Modeling Power: Halogen 100w. Bulb Base: E-14 screw. Synch Voltage: 5volt. Fuse: 6A. Weight: 1.8Lb (800g).