Guide Number (ISO 100m) : 24-42
Flash Control Mode Canon - E-TTLII, E-TTL , Nikon : i-TTL, D-TTL , Sony : ADI, P-TTL

Recycling Time (Full flashing) :
Alkaline Battery - 4-AA approx. 3.5 sec.
Ni-MH Battery - 4-AA approx. 3 sec.

No. of Flashes (Full flashing) :
Alkaline Battery - 4-AA approx. 220
Ni-MH Battery - 4-AA approx. 240

Auto Effective Range (Focal Length at 35mm) : TTL Auto 1.5-21m
Power Ratio : FULL, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64

Angle of Coverage :
Covers the focal length of 16mm or longer (APS-C size)
Covers the focal length of 24mm or longer (when converted to 35-mm film size)

Effective range of AF assist light : 1-5m
Flash Speed : Approx. 1/500-1/13,000 sec.
Bounce Flash : Vertical: Up 90o / Horizontal: Left 180o, Right 120o

Wide Panel -
Built-in : 13mm (APS-C size) or 20mm (when converted to 35-mm film size)
when the wide panel is used.

Zoom position display (switch type) :
24-105mm (24,28,35,50,70,85,105mm) (when converted to 35-mm film size)
16-70mm (16,19,24,34,48,58,70mm) (APS-C size)

Dimensions (HxWxD) (w/o Shoe) : Approx. 116 x 64 x 102mm / 4.6 x 2.6 x 4.1 in
Weight (w/o Battery) : Approx. 260g / 9.1oz