The "Night Eyes" model has a large aperture camera lens that brings you a wider & brighter field of view. Special housing for high dust or humidity environments. Includes built-in IR illuminator for use in the darkest conditions. Operates approximately 35 hours on one CR-123a battery (not included). Features lens cover, padded carrying case and 1-year warranty. Light intensification very high, Image magnification 5.0x, Dimensions 9.4" x 3.2" x 2.4", Weight .9 lbs, Field of view 20 degrees (min), Focus range 11' to infinity, Objective lens focal length 100mm, Eyepiece focal length 9.5mm, Gain 700-900, System gain 12,000-15,000.