The softbox and umbrella combination kit is more suited to portrait and fashion work or more detailed product photography. The softbox gives a nice soft quality of light while the umbrella gives a smaller soft output. These Stellar XD heads have a 600 watt/second output and feature an easy to use all digital back and user friendly push button controls. A tough aluminum is designed to stand up to the most vigorous use. Fan cooling ensures that the flash capacitors and associated circuitry are kept to their optimum working temperature even during periods of prolonged use. User changeable German flash tubes ensure both long life and color consistency. Auto power dumping, thermal cut-out devices and greater air flow around the capacitors keep this unit cool and safe. The rear control panel houses user friendly controls that allow not only the flash and modeling lamp intensity to be set but also the switches that allow the choice of audible or silent recycling indication and proportional or full power modeling lamp setting. Other features that are important to the busy professional includes-Inch types bayonet fitting reflectors and accessories allowing a wide range of Interfit accessories to be fitted. Sensitive infrared and flash sensors and five f-stop stepless adjustment of both flash and modeling lamp, fast re-charge coupled with audible and visual 100% recharge indicators add to the ease of use. This kit consists of 2 Stellar XD 600 watt/second, 2 COR751 Light stands,1 36-Inch translucent Umbrella 1 39-Inch x 39-Inch Softbox and Roller Bag (INT435).