The MiniStar31MR-EX® is the ultimate LED conversion for your MagLite® MagCharger®. 1,000 lumens of pure, white LED light, LEDSense® thermal management, 3 precision optics, multi-mode or single-mode functionality, and unsurpassed, field-tested durability deliver the performance of flashlights costing much more. Take your MagCharger® into the next realm of performance with a MiniStar31MR-EX® LED Conversion. Fits MagLite® MagCharger® flashlights Multi-mode function: (high/medium/low), user configurable to single mode via switch on side of module Electronically regulated for constant light output Extends battery runtime Approximate runtimes: 2 hours on high (1,000 lumens) 6 hours on medium (500 lumens) 37 hours on low (Saves money- stop replacing bulbs Includes LEDSense® thermal management for maximum light output and reliability under the most extreme conditions