Designed to offer optimal tactical functionality, the flashlight features four different light functions and an ultra-durable construction able to handle any lighting need. At its highest setting, the Strion projects a powerful 160 lumen beam capable of illuminating entire hallways, alleys or walking trails. When switched to the battery-saving, low power mode, a 40 lumen beam produces over seven hours of continuous illumination. A grooved barrel is compatible with long gun mounts, providing users with a tactical light source without having to compromise rifle control or stability. The rechargeable lithium ion battery eliminates the need for replacement batteries and offers a full charge in as little as three hours.