The Phottix R4 is a large diameter studio light with a 12mm ultra-thin built-in 180 + 180 ultra bright LED setup (3200K-5600K), mounted on the edge of the light body frame. The light is filtered through a built-in diffuser and uses the latest in flicker-free LED technology to provide a uniformly illuminated area light which is soft and glareless. The Nuada R$ is perfect for professional video and photography. The round design is easily adjustable, making it perfect for creatives on-the-go. From make-up artists to vloggers and product photographers - the R4 meets your studio or on-location lighting needs. The Phottix Nuada R4 ALSO runs on Sony-compatible V-Mount batteries (not included) which can be used for on-location work.