Features: The PROMASTER FM650 is a basic manual flash. Ideal for older point and shoot cameras or to use as a slave flash in a multiple flash setup. Specifications: Guide Number (ISO100/DIN21): 20(m)/66(ft) Angle of Illumination: 35mm Recycle Time: 5 seconds Power Source: 2 X AA batteries Dimension: 2.5" x 2.36" x 3.55" (63 X 60 X 90mm) Weight (w/o batteries): 4.48oz (127g) Included Accessories: Sync Cord