Holosun HE507COMP Open Reflex Optical Sight 2 MOA Dot Green CRS Competition Reticle Black. 1 x 0.87 objective lens for enhanced shooting performance and Holosun s new Competition Reticle System (CRS) with Holosun s 650nm Red/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-RD/507Comp-GR is made from 7075 aluminum with an industry standard footprint and includes Shake Awake technology Shake Awake Technology is a standard feature on all current model Holosun optics and serves to extend battery life by deactivating the optic s LED while not in use. A highly sensitive motion sensor works to detect motion keeping the LED powered on during use. This allows for duty or concealed carry with seamless operation throughout your day or shift. At the end of your day or shift when your firearm is stored the motion sensor will detect a motionlessness state and after 10 minutes (default setting) Shake Awake Technology powers the LED off until motion is again detected. Shake Awake offers settings from 10 minutes to 12 hours depending on the model and can be deactivated altogether if preferred. The slightest touch of the optic instantly reactivates the LED so your Holosun optic is ready when needed. Specifications for Holosun HS507COMP 1x1.1x0.87in Reflex Red Dot Sight: Manufacturer: Holosun Color: Black Finish: Anodize Fabric/Material: 7075 T6 Aluminum Magnification: 1 x Objective Window Size: 1.1x0.87 in Reticle: 2 MOA Dot Illumination Type: LED Eye Relief: Unlimited Adjustment Type: MOA Adjustment Click Value: 1 MOA Emitter Type: Open Parallax: Parallax Free Battery Type: CR1632 Lithium Metal Battery Quantity: 1 Battery Life: 50000 hours Operating Temperature: -30 - 60 Celsius Water Resistance Level: IP67 Length: 2.67 in Width: 1.96 in Height: 1.25 in Weight: 1.7 oz Magnification Type: Fixed Red Dot Sights-Footprint: RMR Vibration: 5000G Housing/Frame Material: 7075 T6 Aluminum Storage Temperature: -40 - 70 Celsius Features of Holosun HS507COMP 1x1.1x0.87in Reflex Red Dot Sight: Up to 50000 Hour Battery Life Shake AwakeTM Technology with Last Setting Recall Enlarged Window for Enhanced Field Of View Competition Reticle System (CRS): 2 MOA Dot w/ 8/20/32 MOA Circle - Parallax Free & Unlimited Eye Relief Package Contents: Holosun HS507COMP 1x1.1x0.87in Reflex Red Dot Sight T10 L Key User Manual CR1632 Battery Lens Cloth Holosun HE507COMP-GR: HE507COMP Open Reflex Optical Sight 2 MOA Dot Green CRS Competition Reticle Black