When you buy a pair of superior binoculars, you expect exceptional optical quality. The Meade 10x56 MasterClass Pro ED Binoculars are designed to be the premium binoculars for outdoor enthusiasts and set the example for advanced optics. Includes extra-low dispersion(ED) glass, fully multi-coated optics, and BAK-4 prisms with Dielectric & Phase coated optics. Other features include precise color correction, amplified high-resolution views, and maximum light transmission. The integrated field flattener lenses virtually eliminate all field curvature yielding sharp images from edge to edge. With an incredible close focus of less than 5ft., these binoculars will bring objects close up in great detail. The binoculars are nitrogen purged and waterproof to ensure it stays dry and dust-free for any outdoor viewing condition.