NightShot fills the high-quality low cost rifle scope need. 3x Magnification with a 100yd night range. Built-in infrared illuminator. Weatherproof construction. 640 x 480 Resolution display. Windage and elevation adjustment: 1/4" at 50yds. Eye relief: 2.7". Field of view: 5.6-degrees. Focus distance: 10ft to infinity. Reticles: 3 Each in black and white. For use with non-magnums up to 30 caliber. Compatible with Weaver and Picatinny rail systems. Requires 4 AA batteries (NOT included). Dimensions: 13.2" x 2.7" x 4".