The Elinchrom D-Lite4 Kit provides 2 entry-level 400 watt/second monolights with a 5-f/stop power adjustment range. The power levels are clearly visible in digital readouts on the rear of the unit. The monolights are lightweight, accept a household bulb as a modeling light, and recycle in 1.6 seconds at full power. Stands rise to a maximum height of 9' (2.7m) Watt/Seconds - 400 watts - each light Recycle Time - 1.6 sec at full power at 110V Flash Duration - 1/800 sec at full power Flash Variability - 5 stops, in 1/10 stop increments, 25-400 w/s Modeling Light - 100-watt Dimensions - 8.25 x 6.3 (21 x 16 cm) Weight - 25 pounds