Patented digital focus technology for an effortless control of light. MAXVIZ technology offers high-definition beam for exceptional vision. Custom optics design for direct and peripheral vision. Smooth digital switching allows options of high, power-saver, and emergency strobe modes. Latest LEDs combine powerful light output and natural daylight color beyond the ordinary consumer experience. Durable aluminum alloy construction is impact resistant (1 meter) and water resistant. Batteries included.