The Streamlight TLR-7A FLEX Rail Weapon Light in black is a durable and high-quality accessory designed for handguns. It is powered by a CR123A battery with a battery life of 1.5 hours, ensuring continuous illumination during shooting activities. The light features a strobe function and is waterproof, making it suitable for various sports and hunting applications. With a weight of 2.4 oz and a limited lifetime manufacturer warranty, the Streamlight TLR-7A FLEX is a reliable and long-lasting addition to any firearm.