Visionking Spotting Scope 20-60x80 Monocular Telescope for Waterproof Bak4 with Tripod Magnification:20-60x Field of View(m/1000m) 45-15 Exit Pupil(mm) 4-1.33,Close Focus Distance:10 m Perfect for hunting, bird watching and all comparable nature uses fully multi-coated optics combined with BAK4 prisms ensure a crystal clear image in all conditions