Whether you are a full or part-time professional or a serious amateur, a Versalight will fill your needs perfectly. Use it in a studio or on location, "as is" or customized with accessories, a Versalight system will grow as your needs change. FEATURES INCLUDE: Rugged aluminum alloy housing; voltage stabilized for consistent performance; fan-cooled to prevent flash from overheating; continuously adjustable 40-step power with 6 indicator LEDs to show power level selected; recycles in 0.5 - 2 sec., triggered by built-in 360° sensitivity slave sensor, sync cord or test button; low-voltage triggering system is safe for all camera types; 150 watt modeling lamp with on/off control; tracking switch matches model light and flash power for accurate previewing of flash pattern; user-replaceable flash tube with UV coating; universal light stand mount adjusts on track for balancing weight of flash with umbrella, soft box or other attachment. 120537 Versalight E-360 has 360 watt-second power output with a guide number of 193 (ISO 100) and weighs 4.8 lbs. Each flash is supplied with PC sync cord, AC power cord, flash tube cover. Requires optional 7" reflector (unless flash will be mounted in a softbox).