Features: AMR - Automatic Modified Reticle Parallax-Free Optical System Massive 40mm High-Performance Multi-Coated Mangin Lens Quad Ballistic Circle Dot 2.0 Reticle 15 Brightness Settings (12 Day, 3 NV) Dedicated NV Override Switch 50,000 hr runtime on CR123 utilizing MOTAC Flip-Back Lens Covers Included MIL-STD-810 Durability IPX8 for Waterproof and Fog-Proof Performance Assembled in Oregon, USA