High-performance optical system Reliable distance measurement Ballistic angle compensation Comfortable design for fatigue-free viewing LED display adjusts to match lighting conditions Just the essentials. Leica's Geovid R Rangefinding 10x42 Binoculars feature a high-performance optical system, reliable distance measurement and ballistic angle compensation. Comfortable with a wide field of view, these are perfect for scanning broad terrain or for viewing for long periods of time. High-contrast lenses with edge-to-edge image sharpness ensure easy identification of even the smallest details. LED display adjusts the brightness automatically to lighting conditions. Displays linear distances for a measuring range of up to 1,200 yds. (1,100 meters). Ballistics function displays the equivalent horizontal range for angled shots from 10 to 600 yds. (or 10 to 550 meters). Waterproof to 16.5 ft. Nitrogen-filled.