Steiner 10x50 Military R SUMR BinocularsWhen there's the need for power and brightness, in a hand held and easily transportable unit, try the 10x50 Military. The 10x50's are ideally suited for open terrain, desert, mountainous or hilly country, and equipped with a special horizontal grid mil reticle. Like all Steiner military binoculars, they're water and shock proof to Mil std 810E and once the initial focus is set for your eyes, further adjustments for distance won't be necessary.