The Duty-XL 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 double bar side-clamping Optic is sure to be the best companion to your Duty, carry, or competition gun. The new double-bar feature ensures a rock-solid mount to ensure no movement. FEATURES 10 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 Life CNC machine One-piece body (aircraft aluminum) 100% Shockproof (Rated for +P and +P+ Ammo) Waterproof (ipx7, 1 meter for 30 mins)