Near focus as short as 10 inches makes this monocular great for use at museums and exhibits with its 6.8-degree field-of-view. They can also be used as a magnifier. They make a great gift for that hard-to-please person. Sturdy monocular as short as 4 inches. 20mm objective lens diameter. 8x power multi-coated optics. 357-foot field of view at 1000 yards. 10-inch near focus – perfect for museum use. Comfortable 11mm eye relief.