Swarovski Optik Swarovision 10X50 Binoculars, (Green) Swarovision technology with field flattener lenses, HD optics, and maximum eye relief. Optimized Swarobright, Swarodur, Swaroclean and Swarotop coatings. Multi-stage removable twist-in eyecups, rugged magnesium housing, and nitrogen filled to prevent fogging. Unique design with EL wrap-around grip and slender housing for superior functionality. Wide angle eyepiece for exceptionally large field of view.