The Nanlite 900CSA bi-color is a light source with a color temperature ranging from 3200 to 5600K for easy integration with tungsten or daylight fixtures. The lighting fidelity CRI/TLCI 95/93 is an indicator of color accuracy in performance. The light intensity is variable, from 0 to 100 degrees. The output can be controlled with the included 4-way barndoors, allowing you to focus the light on specific areas of the subject. Power is supplied via the included AC power supply, but the light can also operate on optional V-mount batteries.