Functions as a wireless commander for the SB-R200, SB-800 and SB-600 Speedlight units.

Supports the Nikon Creative Lighting System (CLS) and compatible CLS cameras.

Controls an unlimited number of Speedlights for up to three groups.

Offers 4 independent channels for competitive shooting environments.

Provides wireless control up to 66 feet.

Built-in AF assists illuminator for critical focus in low-light situations.