Nikon SU-800 Wireless Speedlight Commander
A commander to control up to 3 groups of i-TTL compatible wireless flash units. This Speedlight equipment has been developed to provide a variety of wireless multiple flash and close-up flash operations. The Wireless Speedlight Commander SU-800 controls the flash output levels of the SB-800, SB-600 or new SB-R200 remote Speedlight units when mounted on current Nikon digital SLR cameras that are compatible with Nikon Creative Lighting System.
Functions as a Wireless Commander for SB-R200, SB-800 and SB-600 Speedlights units
Supports the Nikon Creative Lighting System (CLS) and compatible CLS cameras
Controls an unlimited number of Speedlights up to three groups
Offers 4 independent channels for competitive shooting environments
Provides wireless control up to 66 feet
Built-in AF Assist Illuminator for critical focus in low light situations