Outdoor binoculars area of use travel nature outdoor sports magnification 10 x lens diameter 43 mm prism system roof exit pupil diameter 43 mm min focus distance 2 m angle of view 6 field of view in 1000 m 104 m twilight factor 207 relative brightness 18 49 diopter correction 4 0 dpt focussing system central focus viewing straight binocular weight 730 g special features for spectacle wearers rubber armouring outdoor function waterproof