Features BK7 glass for clear, bright and crisp images Fully Multi-Coated Rubber armoring for protection and durability Twist up eye cups Description ALPEN MagnaView binoculars offer performance and value for today&';s sports optics user who demands a binocular that delivers day in and day out. Durable, yet comfortable, with quality optics, ALPEN MagnaView binoculars offer more features than other binoculars in their price class. MagnaView binoculars offer enhanced value at the mid and lower price range. Specs Item Number 261 Magnification 10x Waterproof No, Water-Resistant Field of View (@1000YD/M) 294ft / 98m Lens Coatings Fully-Multi-Ctd Eye Relief 12.5mm Exit Pupil 3.65mm Focuser Type Center Objective Lens Diameter 42mm Close Focus 19.6ft Prism BK-7+BaK-4 Eyecup Type Twist Up Weight 32 oz Manual To download printable PDF manual Click Here Warranty Limited USA Five Year Warranty once registered within 60 days of purchase. Click Here to register. CA Residents: Prop 65 WARNING(S)