These classically styled binoculars use their porro prism optical design to provide optimal image clarity and depth of field. Their widely spaced objective lenses enable enhanced triangulation between binocular and subject, presenting the observer with a rich, three dimensional image that only traditional porro prism binoculars can offer.porro prism binoculars provide an enhanced three dimensional image of the subjectwaterproofwide 8.1° field of view allow you to see the entire scene all at oncebak 4 prisms and fully multi coated optics deliver maximum light transmission through the optical path8.2' close focus for detailed observation of subjects in close proximityergonomic body with synthetic rubber armor and a non slip griptripod adaptable for extended viewing sessionseyeglass friendly with generous eye relief and comfortable rubber eyecups8x magnificationlinear field of view 1000 yds 1000 m 425 ft 142 mweight 18.3 oz 520 gdimensions 110mm x 165mm x 48mm