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: 20x. Effective aperture of the objective: 60mm. Angle of view: 2.2 degrees. Field of view (at 1 000 m): 38m. Exit pupil: 3mm. Ocular clearance: 21mm. Relative brightness: 9. Minimum focusing distance: 8m. Height (approx.) 224mm. Width (approx.): 195mm. Thickness (approx.): 85mm. Weight (approx.): 1400 gr.