Features Lifetime Warranty with registration* Waterproof BAK4 Optics Long Eye Relief Fully Multi-Coated Lightweight and ergonomic open hinge body design Twist up eye cups Cleaning Pen Included Description Available in apertures ranging from a compact 26mm that slips easily into a coat pocket to an impressive 56mm that gulps in light, Wings waterproof binoculars have fully multi-coated optics and premium BaK4 prisms that produce bright, high-contrast images even in twilight conditions. Designed with versatility in mind, these binoculars have an open bridge for steady gripping and feature twist-up eyecups to comfortably accommodate observers with or without eyeglasses. In addition to being waterproof, Wings binoculars have rubber armoring for protection against minor bumps and are purged with an inert gas to prevent internal fogging. Specs Item Number 547 Magnification 10x Field of View (@1000YD/M) 344ft / 105m Waterproof Yes, 1m/30mins Lens Coatings Fully Multi-Coated Eye Relief 16mm Exit Pupil Focuser Type Center Objective Lens Diameter 34mm Close Focus 8.2ft Prism BaK-4 Eyecup Type Twist Up Weight 36.8 oz Manual To download printable PDF manual Click Here Warranty *USA Limited Lifetime Warranty when product is registered within 60 days of purchase. Click Here to register. CA Residents: Prop 65 WARNING(S)