Outdoor binoculars area of use watersports travel nature outdoor sports magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 42 mm min focus distance 45 m angle of view 54 field of view in 1000 m 94 m twilight factor 205 relative brightness 17 64 diopter correction 4 0 dpt focussing system central focus viewing straight binocular coating fully multi coated weight 650 g special features for spectacle wearers