The Smith & Wesson Galaxy 13 LED Flashlight is an extremely popular light. It features Dual Switch Technology and has an anodized aluminum body with 10 White LEDs (for general illumination) and 3 Red LEDs. Red LEDs allow you to see at night while preserving your natural night vision. They are used in aviation, law enforcement, military, astronomy, hunting, camping, etc. It runs up to 30 hours in White LED mode or 80 hours in Red LED mode. A deluxe holster and 3 AAA batteries included. The Limited Lifetime Warranty guarantees you will find the quality and durability you have come to expect from Smith & Wesson since 1852. For many years, the military has used red light as a night time color. Red light allows you to see in the dark without losing your natural night vision. Red LEDs have many uses such as in vehicles at night (so not to disturb the driver or other passengers), map reading, emergency signaling, etc. They are used by pilots, astronomers, truck drivers, police, emergency personnel, military, etc.