Guide Number (ISO 100-m) : 20
Flash Control Mode - Canon : E-TTLII or Nikon : i-TTL

Recycling Time (Full flashing)
Alkaline Battery - 2-AA approx. 5 sec.
Ni-MH Battery - 2-AA approx. 4 sec.

No. of Flashes (Full flashing)
Alkaline Battery - 2-AA approx. 200
Ni-MH Battery - 2-AA approx. 280

Auto Effective Range (Focal Length at 35mm) : TTL Auto 1.0-10m

Angle of Coverage :
Covers the focal length of 22mm or longer (APS-C size)
Covers the focal length of 32mm or longer (when converted to 35-mm lm size)

Flash Speed : Approx. 1/800 sec.
Bounce Flash : Vertical: Up 90o

Wide Panel :
16mm (APS-C size)
24mm (when converted to 35-mm film size)

Dimensions (HxWxD) (w/o Shoe) : Approx. 43.5 x 60 x 88mm / 1.8 x 2.4 x 3.5in
Weight (w/o Battery) : Approx. 100g / 3.5oz