Power: 300 watt second (joule) at full power Color Temperature: 5600k ? 100k Guide Number: 184? /56m @ 100 ISO Modeling lamp: 75 watt / 120 volt G6.35 Bipin Halogen Lamp Power Setting: Continuous, 1/16th to full power Optical Slave: Built-in, effective up to 35? / 10m depending on conditions Recycling Time: .5 to 2.5 seconds Power Input: AC110 - 130 volt, 60Hz Fuse: 6.3 Amp ? 6.3A 250V Weight: 2 lb. 6 oz. approx. Size: 7 1/2? L x 4 3/4? x 7 1/2? H (approx. with bracket collapsed) Accepts Bowens mount type accessories