SOG Dark Energy Aluminum 550 lm LED Flashlight with Belt Clip Bright design Durable design Full on, full off switch One of the brightest flashlights of its size with 550-lumens at 100-percent 100-percent, 40-percent, reading level, tactical strobe and momentary one settings Burns for 77-minutes at 100-percent and over 24-hours at reading level Includes (2) CR123A batteries and weighs 4.3-ounces Comes with a limited lifetime warranty