Alpen Teton Binoculars 10x42 High definition, Exta low dispersion optical system;Abbe prisms wth Alpen&';s exclusive SHR metallic coating for bright, sharp, high-res images;A-lock diopter system allows you to set and lock the right eyepiece for your personal eye setting;PXA phase coating for outstanding clarity and contrast;Waterproof, sealed, and nitrogen filled for guaranteed internal-fog free performancetable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 4000 Product Group Code: 4000A Inactive: No