6. The TRS-26 Red Dot is powered by a single CR2032 battery that provides more than 50,000 hours of run time. The battery is easily accessible for quick changes and is designed to last for years of use. 7. The TRS-26 Red Dot is designed for use in a variety of applications, from competition shooting to home defense. The TRS-26 is designed to provide fast target acquisition and a clear sight picture in virtually any lighting condition.