Nikon Speedlight "Wireless Speedlight Commander SU-800"

Links Nikon speedlight product :

http://astore.amazon.com/buy.nikon.speedlight-20

Main Features
-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

-Easy-to-use close-up flash operations. Two types of operations: Dual-light close-up flash and Triple-light close-up flash

-Easy-to-view LCD panel

-Compact and lightweight

-Soft Case SS-SU800 (supplied)

-When using the SU-800 with cameras not compatible with i-TTL flash control, only close-up flash operation (using cords) is possible in use with the optional TTL Cord SC-30.

Specifications

Transmission mode
Infrared-pulse emitting communication using a flash discharge tube

Transmission range
Approx. 20m (66 ft.) for SB-800/SB-600; Approx 4m (13 ft.) for SB-R200 at normal settings

Number of channels
4

Number of groups
3

Number of transmissions per battery
Approx. 1200

Transmission interval
Approx. 1 second

Flash light wavelength
Approx. 800 to 1000nm (infrared ray)

Flash coverage
Approx. 60°

Display
LCD, ready-light

AF-Assist Illuminator
Approx. 10m (33 ft.) at center area using a 50mm f/1.8 lens

Power source
One CR123A (3V) lithium battery

Weight (without battery)
Approx. 160g (5.6 oz.)

Dimensions (W x H x D)
Approx. 68 x 96 x 58mm (2.7 x 3.8 x2.3 in.)

Included accessories
Soft Case (SS-SU800)

Optional accessory
TTL Cord (SC-30)