Built for power, performance, and versatility, the 10-30x50 Level Zoom Binoculars from Barska integrate a thumb lever that allows you to take in a large field of view at a low magnification, and with a quick slide of the lever, increase the magnification to make detailed observations at a distance. Utilizing large objectives, anti-reflection fully multi-coated optics, and a traditional Porro prism optical path, you are provided with a rich depth of field and high-contrast images that are bright and clear with color rendition. Its protective rubber armoring is textured to provide a slip-resistant grip, and if you're planning on glassing for extended periods, the Level Zoom can be mounted on a tripod using an optional adapter.