The M1050Rs are outfitted with an eye-safe infrared laser rangefinder that can measure as far as 1860 yards using a simple two-button user interface and displays the distance in either yards or meters. Steiner’s Sports-Auto-Focus System allows you to focus each eyepiece just once and eliminates the need to refocus again regardless of how near or far a subject is. The chassis is made of a lightweight impact-resistant Makrolon polycarbonate material that is wrapped in oil-, petroleum-, and chemical-resistant NBR synthetic rubber armor that offers improved grip security, especially in cold and wet weather. Its optical tubes are nitrogen-filled and O-ring sealed to be waterproof to a depth of 16′ and resistant to internal fogging when moving through extreme temperature changes and environmental conditions. Flexible silicone lens mounts help the binoculars withstand severe shocks and impacts without damage.