Features 24x20mm Medium Square Lens. Super LED with X-Ray Photo Etching Multi Reticle. Battery Side Loading, 40000 hours Battery Life with 1pc CR1632. 2 mins Auto Shut Off + Motion Sensor. 8 Levels Green Illumination + 2 Levels Night Vision. Mechanical Adjustment 1 Click = 1MOA. Parallax@100 Yards ≤ 2MOA. IP67 Waterproof ( 1 m water, 0.5 hour ). 2P Footprint ( compatible with Trijicon RMR ).