Specification:

Flash emission period : Approx. 1/20000 to 1/500 seconds,
Flash emission count  : Approx. 80 times (using AAA (R03) alkaline batteries),
                                          : Approx. 130 times (using AAA(R03)NiMH batteries),
Recharge time: Approx. 5.5 seconds (using AAA (R03) alkaline batteries),
                             Approx. 4.5 seconds (using AAA (R03) NiMH batteries),
Operating environment : Temperature: –10 to 42°C (14 to 108°F),
                                             Humidity: 20 to 90%,
Dimensions:56.4(W)x89.2(H)x26.9(D)mm/2.2×3.5×1.1(in.)--(excluding protrusions)
Weight:97g (3.4 oz.) (excluding batteries)

Product description:

Product type: External electronic flash for digital still camera,
Guide number: 20 (ISO 100), 12 (ISO100, using the wide panel),
Firing angle: Covering the field angle of 14mm lens (equivalent to 28mm on a 135mm),
Covering the field angle of 9mm lens (equivalent to 18mm on a 135mm),
 Using the wide panel,
Flash modes : TTL-AUTO, MANUAL, RC,