The Holosun AEMS is a compact and lightweight 1x sight featuring Multi-Reticle System, Solar Failsafe and Shake Awake technology. It utilizes a 2 MOA dot and/or a 65 MOA circle to get you on target with unlimited eye relief in a parallax free design. A CR2032 battery helps power this optic for up to 50,000 hours. The eight daylight and four night vision settings provide accurate results at any time. Makes 0.5 MOA adjustments per click. Made from 7075-T6 aluminum, this compact sight weighs 3.9 oz and measures 2.2 x 1.54 x 1.7.