TerraLUX's Tactical 5, No. TT-5, flashlight can be used for tactical and self-defense applications typivcal of law enforcement. This helps the flashlight withstand rugged conditions and have extended reliability, according to the manufacturer. Has a cree XM-L LED providing up to 650 ANSI lumens. Totally waterproof in water more than six feet deep. Can run on high for 2.7 hours, medium 7.3 hours and low 295 hours thanks to its lithium-ion battery. Includes a holster and lifetime warranty.