The HE508T-GR X2 is a hard-use open reflex sight designed for handgun applications. Features include a grade 5 titanium housing with industry standard footprint, Holosun's ultra efficient 540nm Green Super LED with up to 50k hour battery life from a 1632 battery, and a Multi-Reticle System providing 2MOA dot only, 32MOA Circle only, or Circle-Dot combination. HE508T-GR X2 also features Solar Failsafe and Shake Awake technology, and Lock Mode which, when activated, can prevent inadvertent setting changes. HE508T-GR X2 features 12 intensity settings, two of which are compatible with night vision devices. Reticle: 2 MOA Dot Reticle Color: Green Dot Height: 0.63" Footprint: RMR 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: 2 oz Housing Material: Titanium Adjustment Per Click: 1 MOA W&E Travel Range: + or - 50 MOA Submersion: IP67 Vibration: 5000G Color: Black