Compact binoculars area of use theatre travel watersports bird watching nature magnification 10 x lens diameter 25 mm prism system roof min focus distance 32 m angle of view 54 field of view in 1000 m 94 m twilight factor 158 relative brightness 6 3 focussing system central focus viewing straight binocular weight 300 g special features for spectacle wearers rubber armouring outdoor function waterproof