Bushnell Prime Full-Size Binoculars - Bushnell started out with fully multi coated optics to increase light for a brilliantly bright picture. Then they used BaK-4 prisms to increase brightness even further. To guarantee the weather elements don't get in the way, they gave these Prime 10x42 binoculars their exclusive EXO Barrier lens coating to shake off water, dust, and debris. Next, they made them IPX7 fully waterproof to inspire confidence in the field. Finally, they gave them a full, transferable, lifetime Ironclad Warranty so you can buy with confidence. Adapts to tripod Close focus: 12ft/4m Exit pupil: 4mm/0.157in Eye relief: 19mm/0.748in Eyecups are twist-up Lead free glass Length: 5.2in/132mm Multi-coated lens coating Magnification x Objective lens: 10x42mm Prism type: Roof Weight: 23.3oz/660g Field of View: 305ft @ 1000 yards