Outdoor binoculars zoom binoculars area of use hunting watersports nature travel outdoor sports magnification 8 x lens diameter 42 mm prism system porro suitable for intermediate beginner expert exit pupil diameter 53 mm min focus distance 13 m angle of view 46 field of view in 1000 m 80 m twilight factor 183 focussing system central focus viewing straight binocular coating multi coated weight 925 g eye relief 10 colour black specia