Nikon Action EX 7x50 Binoculars, Extreme Terrain, Rubber-Armored (Black) (Certified Refurbished)The binoculars feature bright, multicoated lenses and BaK4 high index prisms, delivering bright, high resolution images. The Nikon Action 7x50 EX Extreme All Terain Binocular offer long eye relief for a clear and comfortable view, especially for eyeglass wearers. The smooth central focus knob provides a fast range of focus for quick viewing. The unique click stop, twist out eyecup design delivers both long eye relief and variable eye relief to