"The Holosun AEMS EVO Reflex Sight enhances the AEMS formula with an enlarged 1.26x0.98"" viewing window that gives you more light, a wider field of view, and a brighter sight picture. Also new to the AEMS EVO is a streamlined 7075 aluminum housing that provides real-world durability, 1,000G vibration resistance, and IPX8 waterproofing. Automatic brightness control combines with Solar Failsafe technology to provide the ideal dot as the light around you changes, while manual brightness controls with 8 daylight and 4 night-vision settings provide full control of the unit. The Multi-Reticle System features a 2 MOA red dot and 65 MOA red circle that helps guide your eye to the dot. The 65 MOA circle can be deactivated to leave just the 2 MOA dot. It still features Shake Awake technology that brings the unit to life with the slightest touch and deactivates when it senses inactivity providing up to 100,000 hours of battery life on a single CR2032 battery. Other features include 0.5-MOA adjustments for windage and elevation and manual brightness with 8 daylight and 4 night-vision settings. Enlarged 1.26x0.98"" viewing window Streamlined 7075-T6 aluminum housing Automatic brightness control with forward-facing sensor Multi-Reticle System: 2 MOA with 65 MOA circle Solar Failsafe keeps the unit operating in the event of a battery failure Shake Awake technology Up to 100,000 hrs. battery life on one CR2032 battery Manual brightness with 8 daylight and 4 night-vision settings IPX8 waterproof rated"