Simmons Pro Target 1x Red Dot - 3 MOA Dot - Experience fast target acquisition and both-eyes-open situational awareness with the Simmons 1x20 Pro Target Tube Red Dot Sight mounted on your firearm. Made of aluminum with a 20mm glass objective lens, the sight comes with low and high Picatinny mounts. Its 3 MOA red dot can be set to 11 brightness levels, and the included CR2032 battery will power the sight for 5000 hours. Detented elevation and windage adjusters provide up to 70 MOA of travel. The optics are coated to be antireflective for optimal light transmission and the resulting bright, high-contrast view. Features 3 MOA red dot with 11 brightness settings; 1x magnification; 20mm objective diameter; Fully AR-coated optics; 5000 hours runtime on included CR2032 battery; Shock and waterproof;