Electronic Structure:Insulated Gate Double-Click The Transistor Automatically (Igbt)Guide Number:33(Iso 100/1M)Power:4 X Aasice Batteriesbattery Life:110-1500 Times (Aaalkaline Batteries Used)Recycle Time :3 Secondsflash Mode:M, S1, S21Color Temperature :5800Kflash Control:1/200 Seconds ~ 1/20000 Secondsdimensions:190 X 75 X 55 Mmnet Weight:315Gfit For:Nikon And Canon Dslr Cameraspackage Includes :Flash Light ------1Pc;Protection Bag(-----1Pc;Mini Stand -----1Pc;Instruction Manua-----1Pc;