Smart Series Plug-in Flash Tube 300WS 1.Stability of flash power 2.Overheating, overvoltage protection 3.Best Service & Price With Mini lightweight designing,it is easy for photographer to carry outdoor. More than five cover colors for your choose,highlighted studio office(Blue/yellow/red/black/grey) It is precisely,controled by Samsung CPU,four stop aperture,1/8-1/1,step-less adjustment,and 1/16 ...