Outdoor binoculars underwater binoculars hunting binoculars area of use travel hunting outdoor sports magnification 10 x lens diameter 28 mm prism system roof suitable for intermediate beginner expert exit pupil diameter 7 mm min focus distance 2 m angle of view 66 field of view in 1000 m 115 m twilight factor 212 relative brightness 49 focussing system central focus viewing straight binocular coating fully multi coated weight 960 g eye