Vivitar 2600 automatic flash features a 3- to 30-foot automatic exposure range.

Vivitar 2600 automatic flash features a 3- to 30-foot automatic exposure range and a 4-second recycle time between flashes. You can expect approximately 650 flashes per set of batteries. Additional features include auto-off circuitry and f-stops of f/2 and f/4. The flash takes 4 AA batteries (not included).Features & detailsExposure range of 3 to 30 feet4-second recycle time650 flashes per set of batteriesSufficient-light indicatorF-stops of f/2 and f/4Product informationProduct Dimensions4 x 3 x 2 inchesItem Weight4.8 ouncesASINB00004RIM0Item model number2600Batteries4 AA batteries required.Customer Reviews3.6 out of 5 stars 13ReviewsBest Sellers Rank#320 in Shoe-Mount FlashesIs Discontinued By ManufacturerYesDate First AvailableMarch 30, 2000ManufacturerVivitar