Vanguard Endeavor HD 82A Angled Eyepiece Spotting Scope, 20-60 x 82, ED Glass, Waterproof/Fogproof The US product warranty is valid only when shipped from or sold by an authorized reseller. Visit the Vanguard World company website for a list of authorized dealers Extra-low Dispersion glass (ED) for accurate color rendition & minimal fringing and Bak4 phase-coated prism with fully multi-coated lenses Dual focus wheel for fine and course adjustment 100% waterproof and fogproof Rubber armored magnesium body with built in sunshield Detachable angled eyepiece with soft, comfortable rubber eyecup and long eye relief Premium Lifetime Warranty. Separate coarse / fine focus controls Zoom Magnification: 20-60x, Objective Lens Diameter: 82mm, Field of view: 110 ~ 52 ft/1000 yards, View angle: 2.1 ~ 1.0 degrees, Near focus: 19.7 ~ 21.33 feet, Eye relief: 19 ~ 20 mm, Weight: 66.7 ounces