Vortex has significantly step up their game in 2011. The new Vortex Viper Binoculars with HD (High Density) extra-low dispersion glass is just one enhancement. One look is all youll need to appreciate why the Viper is an award-winning bino. Add XR fully multi-coated lenses and you have a binocular that delivers bright, crisp details with impressive resolution and color fidelity. Rugged, compact and lightweight - Viper HD Binoculars are one of the lightest full-size binoculars available today. Magnification: 8 x Objective Lens Diameter: 32 mm Eye Relief: 16 mm Exit Pupil: 4 mm Linear Field of View: 400 feet/1000 yards Angular Field of View: 7.6 degrees Close Focus: 3 feet Interpupillary Distance: 59-75 mm Height: 4.9 inches Width: 4.8 inches Weight: 20.6 ouncesMPN: VPR-3208-HD Vortex Viper HD 8x32 Binocular VPR-3208-HD