Binoculars Pentax AP WP 10x30mm. This series consists of a new multi-layer lens coating. A new coating has also been thought for a better transmission of light. The Bak4 prism that makes the reputation of the Pentax brand allows a very good refractive index. The rubber exterior allows a very good shockproof and waterproof protection of your binoculars. Magnification: 10x. Effective aperture of the lens: 30mm. Field of view (at 1000m): 96m. Eye relief: 18.8mm. Minimum focusing distance: 3m. Height (approx.) 158mm. Width (approx.): 120mm. Thickness (approx.): 57mm. Weight (approx.): 463 gr.