Get closer anywhere, in any conditions, with award-winning PENTAX birding binoculars.The U series consists of compact, durable models ideal for use from the field to the theater. PENTAX quality and clarity are within reach, at a price that’s within reach, too. These compact porro-prism models feature a dual-axis, single body design with synchronized eyepiece adjustment. Aspherical lens elements give you edge-to-edge sharpness. The Papilios are very popular amomng butterfly observers.