Bushnell Marine Waterproof 7x50mm Brand New Includes One Year Warranty The Bushnell Marine Waterproof 7x50mm is a porro prism binocular that have been enhanced with a non-slip rubber armor which is shock-resistant and won't slip out of your hand when wet. These ergonomic, easy to use binoculars features fully multicoated / UV optics, creating a pair of binoculars with excellent light transmission, the clarity of BaK-4 prism glass, and incredibly compact dimensions. The Porro Prism binoculars features fold-down eyecups that allows comfortable viewing distance while wearing eyeglasses. These binoculars are o-ring sealed and nitrogen purged that results into 100% waterproof and fog proof performance. It also provides 18mm eye relief and has a viewing angle of 6.7 . Marine Waterproof 7x50mm Features Product # 137500 Fully Multicoated Optics Bak-4 Porro Prisms 100% Waterproof / Fogproof Saltwater Corrosion Resistant Non-Slip Rubber Armor Fold-Down Eyecups Eye Relief Of 18 mm O-Ring Sealed Nitrogen Purged For Reliable Fog-free Performance Hermetically Sealed Illuminated Compass / Rangefinder Individual Focus System Specifications Diameter 50 mm Magnification 7x Close Focus 10.6m Field of View 1000 yds 350 ft Adapt To Tripod Yes Eyecups Fold-Down Exit Pupil mm 7.1 mm Eye Relief mm 18 mm Focus system Individual Prisms BaK-4 Prism System Porro Lens Coatings Fully Multi / UV Weather Proof Water / Fog Proof Size Class Standard