Konus Emperor are designed and built to achieve a supreme optical quality, the binoculars with the impeccable brightness and clarity of their special BAK-4 prisms with Phase Correction. This is an advanced coating technique that will force the light beams back into phase, thus improving the image definition and contrast and creating a sharper view, especially noticeable when observing fine details. Featuring a waterproof and nitrogen purged body, wide angle eyepieces, extra long eye relief and twist up eyecups, along with an attractive and edgy design. Includes case, strap and lens cap.