507Comp-GR Reflex sight features a large 1.1" x 0.87" objective lens for enhanced shooting performance and Holosun's new Competition Reticle System (CRS) with Holosun's 540nm Green Super LED and up to 50k hour battery life with a 1632 cell. CRS is an enhanced multi-reticle system with four components including a precision 2MOA dot, an 8MOA circle, 20MOA circle, and 32MOA circle with multiple combination settings to suit individual shooter preference. 507Comp-GR is made from 7075 aluminum with an industry standard RMR footprint, and includes Shake Awake technology. Reticle: 2 MOA Dot & 8/20/32 MOA Circle Reticle Color: Green Dot Height: 0.72" 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: 6 Day Light & 2 Night Vision Weight: 1.7 oz Housing Material: 7075 T6 Aluminum Adjustment Per Click: 1 MOA W&E Travel Range: + or - 30 MOA Submersion: IP67 Vibration: 5000G Color: Black