Rugged closed-emitter optic for tough conditions IPX7 waterprooof, +P+ recoil rated 50,000 hour battery life with shake-to-wake technology 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. Featuring 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 minutes of inactivity), 50,000 hour battery life, and a CNC machined, one-piece body (aircraft aluminum).