Outdoor binoculars area of use travel outdoor sports magnification 7 x lens diameter 30 mm prism system porro exit pupil diameter 429 mm min focus distance 25 m angle of view 82 field of view in 1000 m 143 m twilight factor 145 relative brightness 18 4 focussing system central focus viewing straight binocular coating fully multi coated weight 486 g special features rubber armouring outdoor function waterproof