*Point source LED creates a clean beam that produces a strong dot without wasting energy.* With 5,000 hours on the mid setting (Setting 4) you won't need to change the battery any time soon. * Works across all common red dot mounts with Deltapoint Pro footprint and included weaver low-rise mount.The Tasco Propoint reflex sight delivers class leading performance and durability with a long battery life. Multi-platform versatility perfect for training, target shooting, home defense, and hunting.