Engage binoculars are ideal for long range shooters. EXO Barrier protection repels water debris oil and fog. Fully multi-coated optics offer maximum brightness and clarity. ED Prime Glass and a locking eyepiece diopter ensure razor sharp images. Dielectric Prism Coating ensures vivid color reproduction and 92% light transmission. PC-3 Phase Coating enhances resolution and contrast. 12x Magnification with 50mm Objective lens. Roof prism system. BaK-4 prism glass. Exit pupil: 4.1mm. Close focus: 10ft. Twist-up eyecups.