The Holosun AEMS Micro MRS Reflex Sight delivers enclosed-optic durability in a compact and lightweight unit designed for modern optics-ready pistols. The Multi-Reticle System features a 2 MOA dot and 32 MOA circle that helps guide your eye to the dot. The 32 MOA circle can be used alone or 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 CR1620 battery. 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 AEMS Macro features a rugged 7075-T6 aluminum housing that fits standard 509T plates and provides 5,000G vibration resistance. It's also waterproof to IPX8 standards. Provides enclosed-optic durability in pistol-friendly package Multi-Reticle System: 2 MOA dot with 32 MOA circle Automatic brightness control with Solar Failsafe Manual brightness control with 8 daylignt and 4 night-vision settings Shake Awake technology Up to 100,000 hours of battery life on one CR1620 battery Waterproof to IPX8 standards