Monocular 10x25 T* Magnification 10x Objective Diameter 25 mm Exit Pupil 2.5 mm Twilight Factor 15.8 Field of View (ft/1000 yards) 264 Close Focus 14.78 ft Diopter Range > +/- 4.0 dpt Eye Relief 15.0 mm Water Resistant Sealed against spray water Functional Temperature Range -4/+104°F Height 4.29 in Weight 3.10 oz Zeiss 10x25 T* Demo Monocular 522053-0000-000