"The Bushnell NatureView 8x40 Backyard Birder Binocular is a fixed-magnification optic designed for mid-range glassing tasks. This model of the NatureView series binocular uses a Porro prism design, which enables more depth of field compared to roof prism designs. The binocular weighs less than 2 lbs and features a rubber-armored body that makes it well-suited for birding and other recreational activities. A multicoated lead-free optical path provides NatureView binoculars with enhanced contrast using responsibly-sourced environmentally-friendly glass elements and prisms. A 56deg. apparent viewing angle provides a broad image of the field of view, making the 8x40 Backyard Birder suitable for most observations.|Bk-7 multi-coated optics|Fold down eyecups|Textured center-focus knob for easy, precise adjustment|Tripod mounting socket|Center focus wheel with ergonomic texture and ridges|Rubber armored body for non-slip grip"