Detailed Product Description STUDIO LIGHT KD-200 1.Self pulg-in flash tube is of better flash2.longer work time,and is easy to replace.3.4-stop aperture,1/10 energy variable,1/16-1/1(infinitely variable)4.Digital temperature controling system,over-heat protective device.5.Intelligence cooling -fan system.6.Originate music tone.7.Large LCD touch-screen operation system.8.Child satefy key.