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 situationsSpecifications:Transmission mode: Infrared communicationTransmission range: SB-800/SB-600: approximately 20 m (66 ft.) SB-R200: approximately 4 m (13 ft.) along the optical axis Number of channels: Four Number of groups: ThreeNumber of transmissions: Approximately 1,200Transmission wavelength: 800 - 1,000 nmTransmission interval: Approximately 1 secondFlash coverage: Approximately 78 degrees horizontal and 60 degrees verticalDisplay: LCD, ready lightAF-assist illuminator range: Approximately 10 m (33 ft.) at center area using a 50mm f/1.8 lensPower source: One 3V CR123A lithium batteryWeight: Approximately 160 g (5.6 oz.)Dimensions (W x H x D): Approx 68 x 96 x 58 mm (2.7 x 3.8 x 2.3 inches)
