Accessory Type: Camera Flash; Compatible Brands: Universal, Pentax, Sony, Nikon, Canon; Compatible Models:7D, 450D, 40D, 500D, 550D, 600D, Universal, 50D; Guide Number:GN20m (ISO100, DIN21); Rotate Range: Up/down ward angle: 0-90 degree; Left/right angle: 0-270 degree; Zoom Range (mm):24~105 mm; Power Source:4 × AA Batteries; Color Temperature (K):5600; Interface: Hot Shoe