Description and technical information: ZRT-460 Monocular Spotting Scope. A wonderful little monocular with perfect proportions. It has the added convenience of detachable handle for point and shoot viewing. It can also be mounted on a tripod or any screw-mount platform with a 3/8" groove. Perfect for all activities. Magnification - 20x Angle of view - 3.2o Resolution - 3.6" Objective lens diameter - 60 mm Exit pupil diamete - 2.5 mm Exit pupil distance - 9.3 mm Diopter adjustments Temperature - -20 to +50oC Overall dimensions - 320x63 mm Weight - 0.73 kg