Magnification: 4x - 12x - Objective Diameter: 40mm - Exit Pupil: 3.3 - 10mm - Field of View: 7.3 - 23.6 ft @ 100 yds - Tube Diameter - Other: 1 in - Eye Relief: 3.7in - Objective Outside Diameter: 50mm - Eyepiece Outside Diameter: 44mm - Overall Length: 14.1 in. Adjustment Graduation - Other: 1/4 in - Max Internal Adjustment: 60 MOA - Parallax Setting - Other: 100 yds - Waterproof/Fogproof: Yes - Light Transmission - Other: Up To 98 - Patented BDC reticle: The BDC reticle allows hunters to hold 'dead-on' at ranges exceeding those previously thought possible. The BDC's unique see-through ballistic circles offer an incredible advantage for long range shooting yet allow a normal sight picture for shorter-range shots where the crosshair itself is the aiming point. - Extremely bright sight picture: Allows for high-resolution images even when hunting in the least desirable conditions - Versatile magnification range: Offers the flexibility needed for any type of hunting situation from heavy timber to the open prairies. - Waterproof fogproof shockproof: Nitrogen filled and O-ring sealed. - Multicoated optical system: Multicoated lenses boost light transmission up to 98% unheard of in similarly priced scopes. Generous consistent eye relief: Keeps your brow safe even with the heaviest recoiling cartridges lightweight rifles and severe shooting angles. - Precise hand-turn 1/4-MOA click adjustments: Positive-click reticle adjustments get you zeroed in quicker and maintain your setting even with heavy recoil. - Sun Shade Adaptable: 40 mm & 50 mm models.