Leica Ultravid HD-PLUS Binocular Roof Prism Black Demo Twist-up eyecups with two position click-stops for comfortable viewing. Aqua-Dura coating that is both water and dirt repellent, even under poor conditions, offering abrasion resistance and protection to exposed elements. Uses fluorite glass containing fluoride for the highest in glass quality. This minimizes color fringing while increasing contrast and natural color.