Holosun Ronin AEMS Red Dot Green DotHolosun Ronin AEMS Red Dot Green Dot 2 MOA dot inside a 65 MOA circle reticle; Constructed from 7075 T6 aluminum with an anodized finish; Solar Failsafe and battery dual power sources; Shake Awake technology with a 50k hour battery life; Clear flip down lens covers included; Lower 1 3 co witness mount; 12 brightness settings, with 4 night vision compatible; Dimensions: 2. 2 x 1. 54 x 1. 7 inches; Weight: 3. 9 oz; Submersible to IPX8 standards and