8.5 x 21 Papilio Series Binoculars - Fast & Easy Center Focusing

Papilio 8.5 x 21. Named for the latin word for butterfly, pentax papilio binoculars are the perfect choice for insect and bird observation in the field or in museums and galleries. Papilio offers a minimum focusing distance of approximately 1.6 feet and incorporates new design technology that automatically compensates for the misalignment of right and left image fields at close ranges. Featuring fully multi-coated optical elements, high-refraction bak4 glass prisms, a long 15 millimeter eye relief, and protective rubber housing, papilio is a great choice for spectator sports, hiking and travel as well. No other binoculars like them on the market! Ideally suited for viewing insects, birds, artwork and any other object at close ranges. C.L.O.S.E. (convergent lens optical system engineering) allows them to focus down to 1.6 feet. Tough rubber covered exterior provides a sure grip and protects the internal mechanisms. Sleek, contemporary ultra-compact body with uni-body construction. Revolutionary dual-axis, single body housing with synchronized eye-piece adjustment to assure correct optical alignment for comfortable viewing. Fast and easy center focusing for handling ease. Helicoid eyepiece rings for extra viewing comfort. Fully multi-coated optics to eliminate harmful ultraviolet rays while improving light transmission for high contrast images with no glare or flare. High quality bak4 prisms transmit more light at the edges to enhance illumination for easier viewing in dim light. Manufacturer: pentax. Compass = no. Field of view @ 1000 yds = 315'. Magnification = 8.5x. Objective lens diameter (mm) = 21mm. Waterproof rating = none. Weight (oz) = 10.2.