Magnification: 4-16
Target diameter: 44mm
Target parallax set 15 to infinity
Crosshair: Red / green luminous crosshair
Material: aluminum alloy
Length: 340mm/13.3in
Weight: 600g
Exit pupil: 8.3-2.1mm
Eye relief: 75.94-81.53
Vision 100 yards. 30-7.3 feet
Battery: CR2032 (included)
Completely sealed, nitrogen filled, shockproof, waterproof and fog proof. You can choose to install in the range of 20 mm