Diamondback 20-60x80 Straight Spotting Scope by VORTEX OPTICS Product Overview now offers the Diamondback 20-60x80 Straight Spotting Scope. The Diamondback Spotter delivers outstanding performance in a light and compact package. The Diamondback optics guarantees a bright image throughout the magnification range and rugged construction stands up to rough use in the field. The Diamondback has multicoated lenses which increases brightness. Phase Correction Coatings are also applied to ensure high resolution and good contrast. Specifications and Features: XR Fully Multi-Coated Dielectric Prism Coatings. Phase Correction Coating Adjustable Eyecups Water and Fog Proof Angled Body Design Rotating Tripod Ring Built-in Sunshade Magnification: 20-60 x Objective Lens Diameter: 80 mm Linear Field of View: 105-51 feet/1000 yards Angular Field of View: 2-1 degrees Close Focus: 22 feet Eye Relief: 20-16.5 mm Exit Pupil: 4-1.3 mm Length: 15.7 inches Weight: 47.1 ounces Unlimited Lifetime Warranty