Samsung ED-PSEF15A, 2.84 oz (80.4 g) Samsung ED-PSEF15A. Product color: Black, Flash guide number: 590.6" (15 m), Compatibility: Samsung NX- & EX-. Weight: 2.84 oz (80.4 g), Dimensions (WxDxH): 2.17 x 2.9 x 1.79" (55 x 73.6 x 45.5 mm)