The Athlon Argos HD Spotting Scope is the perfect mix of optical quality and price. The Argos HD 85mm Spotting Scope features Athlon's multi-coated lenses and porro prisms with phased coating while delivering great clarity and brightness. The composite chassis is rubber coated, fog proof, waterproof, and filled with nitrogen gas for better stability. Includes soft case and Athlon's Lifetime Warranty. Available in Straight and Angled (45 degree offset).Features: Magnification: 20x-60x Objective Lens Diameter: 85mm Field of View: 102-48 ft. Exit Pupil: 4.2-1.42 mm Length: 16.9 in. Height: 4.0" Weight: 70 oz./68.9 ozPhase Coated Porro PrismPhase Coated Porro prisms reflect great mount of lights to your eyes which will give you bright image.Advanced Fully Multi-Coated LensesAdvanced Fully Multi-Coated lenses bring you better light transmission to bring optimum brightness and true color across the entire light spectrum.Nitrogen PurgedNitrogen Purging uses the inertia gas to purge moisture out of the tube giving you better waterproofing and thermal stability.WaterproofWaterproof to protects the binocular in the harshest weather conditions or if accidently submerged underwater.Rotating RingRotating Ring allows you to rotate the scope around tripod supporting ring into the most comfortable and convenient angle for observation.