The Truglo Tru-Brite Dual Color Multi-Reticle Red-Dot Sight is made with a lightweight and compact design that is both water-resistant and shock-resistant. This innovative tactical sight offers two reticle color choices, red or green, to ensure clear contrast against any background and four reticle shapes for improved accuracy in any type of shooting situation.With a large 24mmx33mm window for super-fast target acquisition and a wide field of view, the Truglo Tru-Brite Dual Color Multi-Reticle Red Dot Sight ensures that you never miss another shot. This sighting device features an adjustable rheostat for image brightness control and is parallax free up to 30 yards.