BAK7 Roof Prism, 58° Apparent Angle of View, Fully Coated Optics, Focus-Free Design The PermaFocus 10x42 Binocular from Bushnell offers value and convenience in one simple-to-use package. Don't miss the action while you're fumbling to focus. Simply raise them to your eyes and catch the action instantly with no adjustments necessary. The focus-free operation offers preset compromises; just aim and your subject comes into clear view. The 10x42 model has a nice angle of view and is well-suited to stadium sports from the bleachers. Lose your focus and some of life's finest opportunities can pass you by.