Triad DF (with Charge Kit)Lumens: 550 (high), 15 (low) Run Time: 3 Hours Beam Distance: 219m Length: 6. 25'' Diameter: 1. 4'' Weight: 6. 72 ounces (with batteries) The Triad DF is a workhorse duty light. The ''Double Tap'' option drops the light down to a low 15 lumen setting with just a quick, second press of the tail switch. Dual Fuel Technology means you'll never be without a power source it runs with either a rechargeable 18650 battery (included) or 2 CR123A primary