The MEPRO MOR PRO is a multi-purpose all-in-one red dot reflex sight/IR/Visible pointer in a single unit with multiple power sources. Fiber Optic technology that gathers surrounding light during daytime with a tritium capsule which illuminates the reticle in the dark 24/7 for 10 years, 3 LED brightness level, powered by one or two AA batteries, for Extra Bright modes in extreme light conditions and red or green visible and IR pointers, all in one compact and waterproof rugged sight. The MEPRO MOR PRO only requires one zeroing procedure for all its aiming devices (Reticle, Visible, and IR pointers); once any of these aiming devices is zeroed all other devices will be zeroed as well. Mfg: Meprolight