<p>The sleek, ergonomically designed Vortex® Diamondback Binoculars are fast to get on target, and comfortable to hold for extended periods of glassing. Featuring multiple anti-reflective coatings on all air-to-glass surfaces and multi-layer prism coatings for enhanced light transmission and bright, clear, color-accurate images, so you can pick-out game from brush, and extend glassing time at dawn and dusk. An ultra-wide field of view lets you cover maximum ground quickly and efficiently. Vortex Binoculars are nitrogen gas-purged and O-ring sealed for waterproof performance, and to prevent internal fogging over a wide range of temperatures. A center focus wheel adjusts the focus of both binocular barrels at the same time, and twist and lock eyecups provide comfort with or without eyeglasses. Manufacturer's lifetime warranty. </p> <ul> <li>Sleek ergonomic designed</li> <li>Multiple anti-reflective coatings</li> <li>Multi-layer prism coatings</li> <li>Ultra-wide field of view</li> <li>Nitrogen gas-purged</li> <li>O-ring sealed</li> <li>Center focus wheel</li> <li>Twist and lock eyecups</li> <li>Waterproof/fog proof</li> </ul>