Sightmark Solitude 12x50 BinocularsThe Sightmark Solitude 12x50 Binocular offers quality features including fully multi coated lenses for rich contrast and detail as well as multiple layers of anti reflective coatings to increase light transmission though it's phase coated BaK 4 prisms for brighter, clearer images. Complementing the optics is a long 19mm eye relief and twist up eyecups which is helpful for eyeglass users. The 12x50 Solitude binocular has a nitrogen filled, fogproof