Guide Number (ISO100 - m) : 30
Flash Control Mode -
Canon: E-TTLII
Nikon : i-TTL
SONY(Alpha) : ADI, P-TTL
Power supply : 2 size AA batteries (Oxyride, Alkaline, Ni-MH, NiCad)

Recycling Time (Full flashing) :
Alkaline Battery - 2-AA approx. 10 sec.
Ni-MH Battery - 2-AA approx. 8 sec.

No. of Flashes (Full flashing)
Alkaline Battery - 2-AA approx. 100
Ni-MH Battery - 2-AA approx. 140

Auto Effective Range (Focal Length at 35mm) : TTL Auto-F2 1.5-15 m
Effective range of AF assist light : 1-5 m

Angle of Coverage :
Covers the focal length of 19mm or longer (APS-C size)
Covers the focal length of 28mm or longer (when converted to 35-mm film size)

Flash Speed : Approx. 1/800 sec.
Bounce Flash : Vertical-Up 90o
Dimensions (HxWxD) (w/o Shoe) : Approx. 100 x 68 x 92mm / 4 x 2.7 x 3.7 in
Weight (w/o Battery) : Approx. 220g / 7.7oz