The Holosun AEMS features our Green Multi-reticle System with Solar Failsafe and Shake Awake technology. Features Solar Failsafe allows the red dot sight to remain powered when your battery fails, automatic brightness adjustment; when you're under the sun you have a bright reticle, when you move indoors it will automatically dim down to match ambient lighting conditions; motion on with last setting recall and the multi-reticle 2 MOA dot, 65 MOA circle and circle-dot. Includes Lower 1/3 Co-Witness mount, clear flip down lens covers, battery, multi tool, lens cloth and user manual.