Objective Lens Diameter 56 mm Magnification 2.9 - 20 x Reticle MSR2 Tube Diameter 34 mm Reticle Focal Plane First Focal Plane (FFP) Exit Pupil 2.5 - 9.18 mm Battery Type Lithium Diopter Adjustment Range -2 - 2 dpt Color Coyote Brown Weight 32.5 oz Length 13.8 in Parallax 50 m to Infinity Operating Temperature -46 - 63 Celsius Magnification Type Variable