The Pentax UP series binoculars are a very compact model with an inverted porro prism and they feature a double-axis with interpupillary adjustment, as well as aspheric lenses for excellent edge-to-edge sharpness. This makes them very versatile binoculars. Magnification: 8x. Effective aperture of the objective: 25mm. Angle of view: 6.2 degrees. Field of view (at 1 000 m): 108 m. Exit pupil: 3,1mm. Ocular clearance: 15mm. Relative brightness: 9,8. Minimum focusing distance: 1,9m. Height (approx.) 115mm. Width (approx.): 110mm. Thickness (approx.): 55mm. Weight (approx.): 300 gr.