Waterproof, dirtproof and fogproof, the 8x42 EXWP I binocular featuring 8x magnification is designed to perform in the toughest conditions. High index BaK-4 roof prisms combine with fully multi-coated lenses (including Phase and UV coatings) to deliver maximum range brightness, contrast and edge-to-edge sharpness. With superior, high precision optics and a rugged, ergonomic body, the EXWP I series binoculars are ideal for sailing, hiking and other "extreme" outdoor activities. A sealed nitrogen-gas lens system prevents fogging and condensation. UV coatings help protect your eyes from harmful ultraviolet rays. Long eye relief and "twist up and down" adjustable eyepieces assure comfortable use even when wearing glasses.