The Sig Sauer ROMEO5 1x20mm 2 MOA Red Dot Sight with Mounts is a high-quality optic designed for shooting sports, specifically for rifles. It features a 20mm objective lens diameter, a 2 MOA dot reticle in red color, and a maximum magnification of 1x. Made of lightweight aluminum, this red dot sight is illuminated, waterproof, fogproof, and comes with mounts for Weaver and Picatinny rails. With a battery power source using CR2032 batteries, this sight is a reliable and durable accessory for enhancing your shooting experience.