D-250 studio flash light, can be used as a main light, side light, hair light, or back light for a single head portrait, ModelD-150D-180D-200D-250D-300D-350Output power 150WS180W/S200W/S250W/S300W/S350W/SGuide no.30GN33GN39GN43GN46GN50GNColor temperature5600K±200KOutput control range1/16-Full, variableRecycling time0.7-2.5S D-250 studio flash light