The sleek, ergonomically designed Vortex® Diamondback HD 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 argon 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. The rubber armor exterior is finished in TrueTimber Strata, a versatile multi-environment pattern that maximizes up-close concealment, while using contrasting light and dark colors to disrupt silhouettes at long distances.. Manufacturer’s lifetime warranty.