Tremendous performance at an exceptional price. The 7 x 50 Marine is equipped with Steiner's Sports Auto-Focus system; everything is in focus from 20 yards to infinity once set for your eyes. Steiner Marine binoculars are guaranteed waterproof and shockproof to stand up to harsh marine use. In fact, the rubber armoring prevents slipping, even on a wet surface. Includes a web strap, rain and spray guard for the eyepieces, attached objective lens caps, and protective case. The 7 x 50 Observer has the same great features as the Marine binocular with the addition of a compass. 10-year limited warranty.