The classic design of the 8 x 30mm PENTAX PCF CW Binoculars with Case offers superior optical performance for use in the field, the stadium or the theater. Boasting the smallest body in the PENTAX PCF lineup, these compact binoculars have a nitrogen-filled body protected by a rubber covering that makes them rugged, waterproof, fog-proof and fully submersible down to one meter of water JIS Class 6. The stylish design sports a host of features that provide excellent viewing comfort and easy operation. The high-resolution fully multicoated BaK4 porro prisms provide clear, high contrast images, increasing light transmission and color quality. The helicoid eyepiece ring has 4 click stops to set eye relief, making it an ideal pair of binoculars whether you are viewing with or without glasses. A diopter adjustment precisely balances focus. A perfect blend of outstanding optical performance, rugged waterproof design and compact size, the PENTAX PCF CW binoculars are the perfect companion for a wide variety of viewing opportunities.