Vortex Diamondback 8x42mm Binoculars D248 are superior quality, high-performance hunting optics at an affordable price. The Vortex 8x42 Diamondback Binocular is a smooth focusing binocular that takes you to the fine details you prize. Taking a lead from the Diamondback rattlesnake, this rugged Binocular from Vortex is striking in how well it detects life in low light. These Vortex Binoculars have a huge field-of-view, the largest in its class, enhanced fully multi-coated optics, phase-corrected prisms, waterproof and fogproof construction, soft tapered eyecups, and rugged rubber armor. Vortex Diamondback 8x42mm Binoculars D248 feature fully multi-coated lenses for increased light transmission, and phase correction for enhanced resolution and contrast. The binocular 's roof prisms are valued for greater durability and a more compact size. In addition to the performance of the Vortex Diamondback 8x42 Binocular is its solid construction. These binoculars feature a rubber armor body, providing a secure, non-slip grip, and durable external protection. Multi-position eyecups twist up and down to precise, intermediate settings to maximize custom fit for comfortable viewing with or without eyeglasses. Lastly, Vortex Diamondback Binoculars are capable of withstanding harsh conditions. Waterproof optics are sealed with O-rings to prevent moisture, dust, and debris from getting inside the binocular. Fogproof barrels are filled with argon gas to inhibit internal fogging.