The LED Lenser T7 features the Advanced Focus System (AFS), which is a patented technology that combines a reflector and lens to create a light system that provides both a focused beam for long-distance and a homogenous spill-beam for up-close reading. The Rapid Focus system allows quick one-handed focusing. With Dynamic Switch technology the user has three levels of brightness that make this LED flashlight a great choice for work, home, or adventure.