Vanguard Endeavor ED 8.5x45 Binocular with ED Glass ED glass reduces color dispersion to provide high resolution colors and clarity 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: 8.5x, Objective Lens Diameter: 45mm, Field of view: 340 ft/1000 yards, View angle: 6.5 degrees, Near focus: 8.2 feet, Eye relief: 19 mm, Weight: 27.2 ounces