Specification: Magnification: 2-20 DL Objective lens: 44mm Coating: FMC Green Field of View(ft@100yds): 50.9~ 5.09 Finish: Matte black Waterproof: Yes Fogproof: Yes Shockproof: 3000g Battery: CR2032 3V(Not included) Nitrogen: Full filled Nitrogen Tube Diameter: 30MM Click Value: 0.25′ Parallax: +0.125SD ~ -0.125SD Side Focus: 10 ~infinity Reticle: Glass-etched Mil-do Eye relief: 4.4-3.75 inch Features: 2-20x provide 2 times to 20 times magnification,it is a 10 time ratio zoom rifle scope, can be used in all kinds of hunting/target shooting. Both short distance and long distance can be used. The” Fully Multi-Coated” camera quality crystal lenses for superior brightness, clarity, and contrast in all light conditions. The 30mm main tube and illuminated Red/Green offer the clearest view for easy target acquisition in both bright and low light situations. Nitrogen filling to prevent fogging on the inner lens surfaces One piece tube body for superior ruggedne ¼-minute click adjustments for windage and elevation. The parallax adjustment is moved to the rear of the scope for quick and easy operation. Focus range of 10 meters to infinity. Super high shock resistant,suitable for all calibres from Air Rifle .22 to .50BMG. Reticle focus is achieved via the fast focus ocular adjustment. Attractive matte black finish. A pair of durable Visionking Scope Cover is included to protect your valuable 2x-20x riflescope during transport or when not in use. Rugged and absolutely waterproof in all conditions. Supply from professional optical brand "VISIONKING" directly,buy for confidence. Packaging List: 1x Visionking 2-20x44 DL rifle scope, 1x wipe lens cloth;