CES1102 Features: Spotting scope 80 mm (3.1 ) Diameter 45 angled APO refracting Waterproof 480 mm Focal length (f/6) Fully multi-coated optics Low dispersion fluoro ED glass Zoom eyepiece 20-60x Soft case Aperture: 80 mm (3.15 in) Focal ratio: 6 Magnification 1: 20x-60x Angular field of view: 2.1 / 1.0 Linear field of view (@1000 yds): 112 / 56 Linear field of view (@1000 m): 37 / 19 m (121.39 ft) Eye relief: 20 mm (0.79 in) Near focus: 20 ft (6.1 m) Prisms: Bak-4 Dimensions: Focal length: 480 mm (18.9 in Optical tube length: 17 in (431.8mm) Weight: 72 oz (2041.17 g) Dimensions: 6'' H x 9'' W x 24'' D