The Vortex roof-prism Diamondback 8x28 Compact Binoculars feature fully multicoated lenses that increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces so you can spot game in low-light conditions when animals are most active. Dialectic coating enhances resolution and contrast for color-accurate images. O-ring seals block out dust and debris. Argon gas purging provides fogproof, waterproof performance. Rubber armor ensures a secure, nonslip grip and durable protection. Twist-up eyecups make them easy to use with or without eyeglasses. Right-eye diopter and center focus wheel. Compatible with a tripod adapter (sold separately). Includes rain guard, tethered objective lens covers, neck strap and carry case. Vortex VIP unconditional lifetime warranty. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Compact.