Vortex Diamondback HD 16-48x65 Spotting Scope - Straight - Glassing out west demands an HD optic, but other systems can't get you the clarity you need to see a tail twitch in low light, or pick a tine out of dense cover. The redesigned Diamondback HD spotting scopes have all the horsepower the long-distance hunter needs, and they excel in lowlight-right when you need it most. Vortex also streamlined the exterior for a sleeker, snag-free profile, building in a helical focus wheel. Specs Magnification 16-48x Objective Lens Diameter 65 mm Linear Field of View 138-72 ft/1000 yds Angular Field of View 2.6-1.4 degrees Close Focus 16.4 feet Eye Relief 20.3-18.3 mm Exit Pupil 4.01.35 mm Length 13.75 inches Weight 50.4 oz Included in the Box Neoprene cover Tethered objective lens cap Tethered ocular lens cap Lens cloth