The Trijicon TARS (Tactical Advanced Riflescope) is a 3-15x variable magnification, 50 mm-objective, illuminated-reticle optic designed for tactical and sporting rifles. Premium-grade optics, exact adjustments, and innovative reticle systems allow users to engage targets at extreme ranges. Best-quality glass is fully multi-coated to allow maximum light transmission. Optical engineering advancement produces a generous 3.3 inches of constant eye relief while decreasing overall scope length to 13.9 inches. The TARS features a patented illuminated-reticle system with 10 levels of intensity, including two for use with night-vision optics. Its non-forward emitting LED is much more efficient than current systems; One CR2032 battery provides 30,000 hours of use.