Improved optical configurations: lower F-stop factor, increased optical resolution. Red on green reticle aiming system. Easy push button operation. Reticle brightness adjustment. FOV: 6. Diopter adjustment:+/- 5. Operating temperature: -40C to +40C. Detachable powerful 450mw infrared illuminator allows viewing in total darkness up to 150 yds.. 4m to infinity range of focus. 1/8 M.O.A. windage & elevation adjustments. Includes: two lithium batteries & special tool/wrench. 2-year warranty.