The 20x50 Escape Binoculars from Barska are multi-coated, Porro prism binoculars with BAK7 glass, designed for all types of outdoor activities. The 50mm objectives increase the light-gathering ability of the binoculars, which translates into greater detail and sharper image clarity, attributes which are especially useful in low-light conditions or distance viewing. A threaded-mount receptacle has been designed into the housing to allow an adaptor to be attached to the binoculars for use with a tripod or window mount. These binoculars are designed for convenience and ease of use. 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. They have shock-absorbing rubber armoring for a comfortable, secure, and slip-free grip.