Check the listing for details. LEUPOLD BX-4 Pro Guide HD 12x50mm Gen 2 Binocular (184763) BRAND NEW. Condition: New. Listed at 769.99 USD. LEUPOLD BX-4 Pro Guide HD 12x50mm Gen 2 Binocular (184763) Leupold BX-4 12×50 Pro Guide HD Gen 2 BinocularThe Leupold BX-4 12×50 Pro Guide HD Gen 2 is an upgrade in both form and function. This latest version of Leupold’s best-selling binocular uses high-quality glass and improved lens coatings to deliver the resolution, clarity, and glare reduction diehard hunters and shooters demand—no matter the time of day, you’ll be able to conquer the challenges of harsh light and bright reflections. Along with its outstanding optical system, the BX-4 Pro Guide HD Gen 2 includes swappable Form-Fit eyecups that’ll keep your eyes fresh through hours of hillside glassing.FeaturesElite Optical SystemLeupold’s Elite Optical System offers excellent dawn-to-dusk light transmission for a bright image when it matters most, elite level glare reduction in harsh light, and the resolution and clarity that diehard hunters and shooters demand.Guard-IonGuard-Ion is a hydrophobic lens coating that sheds dirt and water for a maintenance free, clear, crisp image.High DefinitionHigh definition, calcium fluoride lenses ensure incredible clarity at all magnification levels.Tripod ReadyA built-in 1/4-20 rotatable tripod adapter port makes it easy to mount to a tripod.Field Replaceable EyecupsRemovable twist up eyecups allow you replace them in the field if damaged.Waterproof & FogproofLeupold pioneered modern waterproof and fogproof technology using advanced internal gasses and sealing methods that withstand extreme temperatures, elevation changes, and shocks, so the internals of the optics stay moisture free and crystal clear for life.Product ManualSpecificationsMagnification12xObjective Aperture (mm)50Weight (oz)29.3Length (in)6.8Eye Relief (mm)16.0Linear FOV (ft @ 1000 yds)257Angular FOV4.9Interpupillary Distance58-74