The DeltaPoint Micro is fast on target, extremely accurate, and built Leupold tough. But its the low-profile, concealable design that really makes it stand out from the competition. Mounted at the same height as factory iron sights, the DeltaPoint Micro aligns the red dot with the front sight, making target acquisition fast and intuitive and improving your accuracy, all while maintaining a compact profile. Your battery should be the last thing you have to worry about in the field. That's why Leupold designed Motion Sensor Technology (MST) to extend your battery life. It automatically deactivates the illumination after five minutes of inactivity, and as soon as movement is detected, the illumination instantly reactivates, keeping you in the fight for longer. (Does not fit Rimfire Glock and M&P models, Glock MOS, Smith and Wesson M&P CORE, nor Smith and Wesson Shield EZ models). IPX7 waterproof.