Alpen Optics Teton 15x50mm ED-HD Binoculars. Breathtaking clarity. Huge power. Exceptional durability. High-power Teton 15x50mm Binoculars feature extra-low dispersion/high-definition glass (that's the "ED-HD")... a premium-quality glass that limits color dispersion and enhances light transmission, delivering astonishing image quality and clarity that has to be seen to be believed! With a rugged, waterproof/fog proof composite housing, Teton Binoculars deliver optical precision and durability that blow similarly-priced binoculars out of the water. The big picture: 15X magnification, 50mm objective; Each air-to-glass surface is fully multi-coated for maximum brightness; Highest-quality BaK-4 prisms with Alpen's exclusive SHR metallic coating for bright, sharp, high-resolution images; PXA phase coating for outstanding clarity and contrast; Waterproof, sealed and nitrogen-filled for guaranteed internal fog-free performance; Lightweight, ergonomic body for comfortable use; Long 16mm eye relief; Soft rubber eyepiece, rain guard and objective covers protect lenses from the elements; Backed by Alpen's No-Fault, No-Problem lifetime warranty; F.O.V. at 1,000 yds. is 200'; 13' close focus; Weighs 28 oz. Includes premium extra-wide neck strap and leather case.