The HE509T-RD X2 is a hard-use, nitrogen-purged enclosed LED sight designed for handgun applications. The HE509T-RD X2features a grade 5 titanium housing, Holosun's Super LED with up to 50k hour battery life, Multi-Reticle System, Solar Failsafe, and Shake Awake technology. The X2 version adds improved glass clarity, Lock Mode, and a full Multi-Reticle System providing 2MOA dot only, 32MOA Circle only, or a Circle-Dot combination. HE509T-RD X2 includes an adapter plate for compatibility with rmr-style footprints. HE509T-RD X2 feature 12 intensity settings, two of which are compatible with night vision devices. Reticle: 2 MOA Dot & 32 MOA Circle Reticle Color: Red Dot Height: 0.59" Footprint: 509T w/ RMR Adapter Included Parallax Free: Yes Unlimited Eye Relief: Yes Magnification: 1x Multi-Coatings: Yes Power Source: CR1632 Battery Battery Life: 50,000 Hours Brightness Settings: 10 Day Light & 2 Night Vision Weight: 1.72 oz Housing Material: Titanium Adjustment Per Click: 1 MOA W&E Travel Range: + or - 30 MOA Submersion: IP67 Vibration: 5000G Color: Black