Compact and lightweight remote Speedlight Unit Supports the Nikon Creative Lighting System (CLS) and compatible CLS cameras. It features easy-to-set analogue controls. The built-in target light and AF Illuminator allows for proper position of Speedlight on the subject as well as autofocus operation in low light situations. i-TTL Flash control for accurate flash exposures in close-up and other multiple lighting applications. Can be set to one of three Speedlight Groups (A,B and C). The SB-R200 Offers four independent channels for competitive shooting environments, and integrates perfectly into multiple flash situations including the SB800 and SB-600 Speedlight units.