The TRUGLO INC Dual Color Open Red Dot Sight lets you select a red dot or green dot for your target reticle, giving you the ideal contrast against almost any background or lighting condition. Adjust the reticle brightness with the rheostat control, and the Tru-Glo Dual Color Red Dot gives you the flexibility for virtually any shooting environment. Other features on this flexible dot sight include a 5 MOA reticle for quick acquisition, the unlimited eye relief that comes with a reflex sight, per-click windage and elevation adjustment, and a wide field of view. The TruGlow Open Red Dot Sight is water and shock resistant, coated with an anti-reflective finish, and comes with the required CR2032 battery. The reflex dot sight mounts easily, thanks its integrated Weaver mount. Lock on to your target swiftly with the generous 24X34mm window. The Tru-Glo Dual Color Open Red/Green Dot Sight will have you sighted in faster!