Nikon’s 20x120-IV Binocular Telescope delivers premium optical performance for any long-range observation activity, be it on land or on a boat. It functions similar to a traditional spotting scope, but allows the user to view images with both eyes open. The result is higher quality three dimensional images with more brightness, contrast and accurate color reproduction with reduced eye fatigue. This Binocular Telescope also features a long, 20.8mm eye relief which gives the user a considerable field of view of 156 feet @ 1000 yards. In addition, a robust all-metal construction makes the Binocular Telescope immune to rain, humidity, thermal-shock and corrosion. Features of the Nikon 20x120-IV Binocular Telescope: Yoke-style mount with 360° of rotation All-metal bodyIndividual focus eyepiece Waterproof Fog-proof Shock-resistant Like New Nikon 20X120 IV Telescopic Binocular w/Fork Mount 16741__LN