HOLOSUN Micro Red Dot Sight (2 MOA) with AR Riser

50,000 hours of battery life (that's over 5 years of continuous use) Motion awake with 8 hour auto shutoff Parallax-free; when the red dot is on the target, so are you High quality clear lens with crisp, bright red dot High strength aluminum, MAO finish Fully waterproof and submersible to 100 feet