The Nikon 10 x 25 Prostaff Waterproof Monocular is a rugged piece of machinery that packs in several cutting-edge features. Featuring a waterproof and fog-proof construction as seen in Nikon's earlier optics in the Monarch and Action Extreme series, these monoculars also have a rubber armour for a secure grip. The integrated bright multicoated lenses provide you with good visibility even under adverse lighting conditions. The BaK4 high index prisms further enhance the visibility and optical performance. The turn and slide eyecup enable you to view the monocular from an angle for convenience of use.