... range 6-stop aperture,1/10 energy variable 1.0=1/32,2.0=1/16,3.0=1/8,4.0=1/4,5.0=1/2,6.0=1/1 Modeling lamp 150-250w ... and easy to replace.High-effective mode switch ,with large LCD screen.Output power can be adjusted to control the flash accuragely ... studio equipment manufacturer, which is specialized in manufacturing studio flash, LED studio lighting, power pack equipment, light stand, softbox and so ...