Nikon's R1C1 Wireless Close-Up Speedlight System, featuring two SB-R200 Speedlights, delivers superb close-up lighting control with exceptional flexibility. The included SU-800 Wireless Speedlight Commander enables use with Nikon i-TTL SLRs without built-inSpeedlights, including D2X, D2HS, D2H and F6. The SU-800 Wireless Speedlight Commander also extends close-up control flexibility when used with select i-TTL SLRs with built-in Speedlights. Supporting Nikon's Creative Lighting System (CLS) with Nikon's exclusive i-TTL (intelligent-TTL) flash technology, the R1C1 system offers sophisticated lighting possibilities with remarkable accuracy. The system includes all of the components necessary to make close-up lighting easy. For those already enjoying the Creative Lighting System with the SB-800 and SB-600 Speedlights, the SU-800 Commander and SB-R200 Speedlight can be purchased as individual items to implement into an existing lighting kit. The SU-800 eliminates the need for a Master SB-800 unit on camera and can command up to three groups of Speedlights (A, B and C), while the SB-R200 is a impressive remote Speedlight that can be used in a variety of creative lighting schemes with or without the SB-800 and SB-600.