• When using i-TTL compatible Nikon digital SLR cameras and Speedlight, user can divide the Speedlight units into three groups and control the flash output independently for each group
 
• Features a Commander function that can trigger wireless remote flash (SB-800, SB-600, or SB-R200) units without a master flash unit
 
• One-touch switching between close-up and Commander modes
 
• Two types of close-up operation:

Dual-light close-up flash
Triple-light close-up flash
 

Display LCD, ready-light
 
Maximum Range Wireless up to 66' (20 m)
 
Power Source 123A 3v Lithium battery
 
Dimensions 2.7 x 3.8 x 2.3" (68 x 96 x 58mm) [W x H x D]
 
Weight (Approx.) 5.6 oz (160 g)