Northtac RONINP11: The Northtac P11 is a small compact red dot sight with side battery housing and low profile windage/ elevation adjusting turret options, allowing the maximum field of vision. Utilizing new LED technology, the red dot will stay on for up to 50,000 hours on a single CR2032 battery. The motion-sensing red dot automatically turns on with minimally applied pressure and will enable the auto-shutoff feature when left static for long periods. Solid uni-body mount design Programmable shake-awake & auto-shutoff electronic features. Multi-coated lens with removable kill-flash and bikini lens covers. Provides up to 50,000 hours on a single CR2032 battery Adjustable windage and elevation Lifetime Warranty