The Bushnell® Engage™ - Its best-in-class optic, with new industry leading features. The entire line is backed with the all-weather assurance of Bushnell\'s exclusive EXO Barrier lens coating - it repels water, debris, oil and fog. The fully multi-coated optics offer maximum brightness and clarity, and they\'re housed in a lightweight and rugged magnesium chassis. ED Prime Glass and a locking eyepiece diopter ensure razor sharp images every time.