Universal binocular underwater binoculars area of use travel magnification 10 x lens diameter 42 mm prism system roof exit pupil diameter 42 mm min focus distance 2 m angle of view 65 field of view in 1000 m 113 m twilight factor 205 relative brightness 17 64 focussing system central focus viewing straight binocular coating fully multi coated weight 730 g eye relief 15 colour black included in delivery pouch shoulder strap eyepiece cap