The Duty is a rugged, Closed Emitter pistol optic that is Sealed and ready for duty. Never worry about dirt, dust, or water clouding or disrupting your dot. This side-clamping Optic is sure to be the best companion to your Duty, carry, or competition gun. It utilizes the same footprint as the ACRO to ensure widespread compatibility. Available in red, green, and multi-reticle versions. FEATURES10 Levels of brightness (levels 1 and 2 are night vision compatible)Motion control (Shake to wake up)Smart Power Management (auto-Off after 5 mins of inactivity)50,000 Hours of Battery LifeCNC machine One-piece body (aircraft aluminum)100% Shockproof (Rated for +P and +P+ Ammo)Waterproof (ipx7, 1 meter for 30 mins)