The Truglo Triton 30mm Tri-Color Tactical 3MOA Red Dot Sight is powered by one 3V CR2032 lithium battery and comes with a lifetime limited warranty. The integrated Weaver-style mounting system ensures that you can easily mount this sighting device to your favorite weapon. Not only does this Truglo Triton 30mm Tri-Color Tactical 3MOA Red Dot Sight offer three reticle colors (red, green, and blue) for clear contrast against any type of background, but it features a center dot reticle specifically designed for use with tactical-style weapons. All of the special features for which the Truglo Traditional Red Dot Sight Series is known come standard with this model.