Vortex Crossfire HD Compact Binoculars - 8x42 - Optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration and provide outstanding color fidelity, edge-to-edge sharpness and light transmission.  Fully Multi-Coated increases light transmission with multiple anti-reflective coatings on all air-to-glass surfaces. Rubber Armor provides a secure, non-slip grip, and durable external protection. Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments.  Nitrogen gas purging prevents internal fogging over a wide range of temperatures.

• Shockproof: Rugged construction withstands recoil and impact
• Adjustable Eyecups Twist up and down for comfortable viewing with or without eyeglasses.
• Center Focus Wheel Adjusts the focus of both binocular barrels at the same time.
• Diopter Adjusts for differences in a user's eyes. Located on right eyepiece.
• Package includes: GlassPak binocular case, GlassPak case harness, Rainguard eyepiece cover, Tethered objective lens cover, Comfort neck strap, Lens cloth