Fully multicoated optics. Greater than 3.75 in. eye relief for all magnifications. 1-Piece 1 in. Dia. main tube mounting. Duplex reticle pattern. Protective quick-release cover. 0.25 ft. wind age-elevation adjustments with clicks. Waterproof, fog proof and nitrogen processed. Power: 3-12x. Objective: 50 mm Dia.. Close focus: 1000 yards. Field of view at 1000 yards: 32 - 9 ft.. Exit pupil: 16 - 4.2 mm. Wind age-elevation adjustment range: 60 to 60. Warranty: Limited lifetime. Made in USA. 4 in. L x 17 in. W x 4 in. H. SpecificationFeature-packed K4 Riflescopes are engineered for easy and effective use. Scopes feature Rapid Target Technology (RTT): an oversized exit pupil, combined with constant. This feature enables the user to quickly acquire a target and maintain it through magnification changes.