This series consists of models with porro prism, BaK4 prism. This series also benefits from a new multi-coating of the lenses which guarantees the user a clearer vision thanks to a better transmission of light. The rubber exterior finish provides excellent shock protection for your binoculars. Magnification: 16x. Effective aperture of the lens: 50mm. Angle of view: 3.5 degrees. Field of view (at 1 000 m): 61m. Exit pupil: 3,1mm. Ocular clearance: 13mm. Relative brightness: 9,8. Minimum focusing distance: 10m. Height (approx.) 196mm. Width (approx.): 166mm. Thickness (approx.): 56mm. Weight (approx.): 900 gr.