Nikon PROSTAFF 5 10x50mm Binoculars give you comfortable, clear viewing. The enduring perfection of Nikon optics. And these PROSTAFF 5 Binoculars will not disappoint, featuring superb optics, ergonomic design and WATERPROOF, fogproof performance. It's outdoor ready for all your nature-loving activities. Tech Specs: Turn-and-slide multi-click rubber eyecups for custom fit with a full view High eyepoint design for clear view, even when wearing glasses Nitrogen-filled and O-ring sealed for waterproof and fogproof performance Multilayer-coated lenses for a bright, natural view Lightweight, durable fiberglass-reinforced polycarbonate resin construction Smooth central focus knob for fast, detailed focusing near and far F.O.V. @ 1,000 yds. is 293' 19.6mm eye relief 5mm exit pupil Roof prism design Approx. 7 1/2" x 5 1/2"l., 29 ozs !!! Limited Quantities !!!