The Barska 7-20x35 Escape Zoom Binocular has multicoated BAK7 optics in a traditional Porro prism design. The moderate objective size improves the ability to steadily hand-hold the binocular without a distracting amount of movement or the need for a tripod. Consequently, the binocular is always available for immediate use whenever those unexpected must-see situations present themselves. At 20x magnification there is a wide Apparent Angle of View of almost 62degree. A large tactile center focus knob makes for fast and precise focusing. An eyepiece diopter adjustment allows customization for each individual eye affording less eyestrain over long-term viewing. This binocular has shock-absorbing rubber armoring for a comfortable, secure and slip-free grip. It is designed for convenience, mobility and ease of use.