Vanguard Endeavor ED II Binocular with Premium Hoya ED Glass 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 Premium HOYA extra-low dispersion (ED) glass virtually eliminates chromatic aberration for true color transmission across the entire field of view and phase-corrected Bak4 prisms provide improved light reflection, high contrast, and true color fidelity Open-bridge design reduces weight and provides a more comfortable grip and 3-stage click-stop twist-up eyecups for use with or without eye-wear 100% waterproof and fogproof, advanced lens coatings for enhanced light transmission even in low light conditions, and Premium Lifetime Warranty Magnification: 8x, Objective Lens Diameter: 42mm, Field of view: 377 ft/1000 yards, View angle: 7.2 degrees, Near focus: 6.6 feet, Eye relief: 19.5 mm, Weight: 27.16 ounces