Monocular 6x18 T* Magnification 6x Objective Diameter 18 mm Exit Pupil 3.0 mm Twilight Factor 10.4 Field of View(ft/1000 yards) 360 Close Focus 0.98 ft Diopter Range > +/- 4.0 dpt Eye Relief 15.0 mm Water Resistant Sealed against spray water Functional Temperature Range -4/+104F Height 3.35 in Weight 2.05 oz Zeiss 6x18 T* Monocular 522051-0000-000