A-TTL (through the lens) flash exposure control and auto zoon five-position tilt flash head (tilts up from horizontal to 45, 60, 75, and 90 degrees) compatible with Samsung NX Series cameras, NX1000 NX2000 NX3000 NX10 NX20 NX30 NX500 NX1 guide number (based on ISO 100): 42 uses 4 "AA" batteries (not included) weight: 7.8 oz. (without batteries) in excellent condition
