Celestron SkyMaster 20x80 Brand New Includes Limited Lifetime Warranty The Celestron 71018CEL SkyMaster 20x80 binocular can be used for terrestrial or astronomical viewing especially over long distances. It features state-of-the-art technology and phenomenal performance. It has a fully multi-coated optics for enhanced contrast and its BaK4 prisms provide good light transmission, excellent sharpness and clarity. This 80 mm SkyMaster model features enhanced structural reinforcement to the main binocular body which provides maximum stability and secure optical alignment. This binocular is water-resistant. Other features include a protective rubber covering for ultra-firm grip, a large center focus dial for easy focusing, long eye relief ideal for eyeglass wearers and a deluxe padded carrying case included for travel and safe storage. The SkyMaster binoculars are built to provide years of magnificent views of the world around you and the heavens above. As an additional convenience, this 80 mm SkyMaster model also includes an integral super rigid photo tripod adapter. 71018CEL Features Product # 71018 Porro Prism Binocular Multi-Coated Optics f/ Sharp, Clear Views High-Quality BaK-4 Prisms 20x Magnification Giant 80 mm Objective Lens Offers Maximum Image Brightness in Low-light Long-range Conditions Ultra Sharp Focus Across The Field of View Individual Eyepiece Focus to Ensure Optimal Focus Position Suitable f/ Long-range Terrestrial or Astronomical Viewing Protective Rubber Covering f/ Ultra-firm Grip Large Center Focus Knob f/ Easy Focusing Long Eye Relief Ideal f/ Eyeglass Wearers Weather Resistant Housing Integrated Tripod Adapter Rod f/ Ultra-stable Tripod Mounting Soft Carrying Case Included f/ Travel Safe Storage No Fault Warranty Provides Best Protection Product Support On The Market Specifications Diameter 80 mm 3.15 in Magnification 20 x Caps Yes Strap Yes Carrying Case Padded Nylon Weight oz 75 oz 2126 g Angular Field of View deg 3.7 Linear Field of View 1000 yds 195 ft 59 m Exit Pupil mm 4 mm 0.16 in Eye Relief mm 18 mm 0.71 in Near Focus Binoculars 108 ft 33 m Prisms BAK-4 Optical Coatings Multi-Coated Weather Proof Water Resistant Tripod Adaptable Built-In