Fovitec StudioPRO 800 Watt Monolight Flash Photography Photo Studio Lighting Kit - (2) 400W/s Monolight Strobe with 24"x36" Softbox Diffuser and 7'6" Light Stand - (Black) The StudioPRO SD-400, 400W/s Monolight is a well-built and powerful strobe head that makes a great addition to any studio. It has a digital dial which allows the photographer to adjust the power 1/10th of an f-stop It is compatible with any light modifier with a Bowens speed ring and is equipped with an umbrella mount The StudioPRO 400W/s Monolight has a fast recycling time of 3 seconds or less Monolights/Strobe heads, photographers are able to use more power, which leads to lower ISOs (less grain/noise), faster shutter speeds (moving subjects), and greater apertures (f/64, f/45, f/32) PC Sync cord, 7 inch reflector, and AC power cords included