Vortex Kaibab HD Binoculars delivers the best possible view with high-definition color, superb resolution and amazing images. Extending boundaries and redefining standards, it has the power and the attributes required to scan landscapes for identifying the big game. The range includes premium, hand selected and precision-ground HD Lens Elements with HD extra low dispersion glass for sharp, brilliant and true to life views, and XR Plus fully multi-coated lenses for maximum light transmission while finding game in low light. The binoculars also have the sophisticated APO or triplet apochromatic lens system to let the user cherish high-definition views across the field of view, zero color fringing, and no degradation of resolution or dilution of color fidelity regardless of the distance. Other attributes of the ultimate long range binocular consist of a massive 56mm light-collecting objective, ArmorTek ultra-hard scratch-resistant coating on exterior lens surface, roof prism design, dielectric prism coatings, center focus wheel, multi-position eyecups, locking diopter, argon gas purging, o-ring, and rubber armor for a secure, non-slip grip. In addition to this, the Kaibab HD binocular is tripod adaptable. The category is divided into 15x56 and 20x56 combinations. Vortex Kaibab HD Binoculars Top Features APO System HD Lens Elements XR Plus Fully Multi-Coated lenses Roof Prism Waterproof, Fogproof ArmorTek coating Rubber Armor Center Focus Wheel Locking Diopter Multi-Position Eyecups Dielectric Prism Coatings