Vanguard Endeavor ED 8x42 Binocular, 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 ED glass reduces color dispersion to provide high resolution colors & clarity and Bak4 phase-coated prisms and fully multi-coated lenses Three stage twist out eyecups with long eye relief and locking diopter ring 100% waterproof and fogproof Advanced lens coatings for enhanced light transmission even in low light conditions Lightweight, open bridge body design with large, precise focus wheel Premium Lifetime Warranty Magnification: 8x, Objective Lens Diameter: 42mm, Field of view: 367 ft/1000 yards, View angle: 7.0 degrees, Near focus: 6.6 feet, Eye relief: 19 mm, Weight: 25.8 ounces