The HE512T is an enclosed reflex optical sight designed for rifles and carbines with titanium housing and premium features. The Multiple Reticle System allows the use of circle with dot, 20 MOA dot, or 65 MOA circle. A CR2032 battery can provide 50k hours of battery life. Solar Failsafe technology provides backup power in the event of battery failure or drain. Shake Awake technology powers the optic on and off when motion is detected. The fully enclosed design and titanium housing protect the internals and provide extreme durability. IPX8 waterproof rated with an overall weight of 9.17 pounds.