Nikon SB-400 AF Speedlight Electronic Flash Unit

Guide number of 30/98 (ISO200m/ft), 21/69 (ISO100, m/ft) [at 35mm zoom].
Power source: two AA-type (1.5V) batteries.
Flash head can be tilted in 4 steps; horizontal, 60, 75 and 90 degrees.
Weight (without batteries): 127g only.
Dimensions (W x H x D): 66 x 56.5 x 80mm.