This is simply the world's finest scope. It combines the optical performance of the most precise range scopes with the practicality of scopes engineered for the most rugged field conditions. Superior optical design; fully multi-coated optics. Two extra lenses improve resolution, color correction, and minimize aberration. Blackened reticle assembly minimizes reflection. Black anodized internal tube with crinkle finish minimizes unwanted reflection. Four-fold power change range. Durability; tube and saddle are carved from the same piece of aircraft grade aluminum. Erector assembly made of aluminum and brass instead of just aluminum. Reticle is attached with screws and a metal ring instead of just a sealant. Adjustable objective has a spring behind the lens to cushion impact and force the lens to remain in alignment. Waterproof/fogproof. Precision; 1/4" or finer audible and finger-adjustable clicks. Power change ring is specially designed to maximize torque. Adjustable objective has 270 degree adjustment range allowing for more precise adjustment. RainGuard, the revolutionary lens coating developed by Bushnell, is on this Elite 4200 riflescope. RainGuard is a special water repellent coating on which condensation .forms in much smaller droplets when the scope is exposed to rain, fog, or snow. These droplets result in a much clearer and more usable view. Water actually sheets off of rainguard coated lenses much more readily than from a standard coating. Now, the hunter will not miss the shot of a lifetime because he accidentally breathed on his scope eyepiece while aiming. -Actual Magnification: 2.5X-10X -Objective Lens Aperture: 50mm -Reticle: Multi-X -Finish: Matte -Field of View @ 100 yards: 40.3ft. @2.5x,10.8ft. @10x -Weight: 18 oz. -Length: 14.3" -Eye Relief: 3.5" -Exit Pupil: 15mm @2.5x-5mm @10x -Click value @100 yards: .25" -Adjust Range @100 yards: 50" -Selection: Ideal hunting and all purpose riflescope. Manufactures Website Address www.bushnell.com Warranty Information Limited lifetime warranty.