LUCID Microdot Cast Aluminum Frame Rail Mount Built-In Waterproof & Fog proof 7 Brightness Levels Capped and Leashed Turrets Parallax Free Picatinny/Weaver Rail Mount Built in 100% Waterproof Fogproof and Shockproof tested to 458 SOCOM Reticle Auto Brightness Sensor Auto Shut Off after 2 Hours requires 1 AAA Not Included