Vortex Crossfire Red Dot & Riser - TanThe 2 MOA dot is quick to acquire in close quarters, while remaining fine enough to promote pin point accuracy at extended range. With a 50,000 hour battery life and night vision compatibility at the lowest two settings, the Crossfire red dot will keep working in a variety of conditions. The included skeletonized lower 1 3 co witness mount provides a rock solid and extremely lightweight platform. Battery Life: Up to 50,000 hours on brightness setting