The Vortex Kaibab 18x56 HD binocular is a must have for long-distance big-game trophy hunting. When patience and serious optics are needed, the Kaibab binocular provides incredible optics at high magnification. It's preferred use is with a tripod for extended, comfortable viewing. Twist-up eyecups deliver an untracomfortable view experience for long viewing sessions. With the Kaibab HD binocular, you'll be able to see the unimaginable in the pursuit of hard-to-locate trophy big game.