TerraLUX by Lightstar Maglite Ultimate LED Conversion Kit, 1,000 Lumens, White Light, 4 Hours Runtime &ndash; For 4-6 Cell D Mag-Lite Flashlights &ndash; MiniStar31M-EX ULTIMATE LED FLASHLIGHT REPLACEMENT BULB  replace or upgrade your flashlight bulb with the TerraLUX by Lightstar MiniStar31M-EX LED Conversion Kit. Convert your torch into a bright, long-lasting flashlight that you can rely on. FOR USE WITH YOUR MAGLITE FLASHLIGHT  designed for use with your 3-6 D cell MagLite torch. The bulb is electronically regulated for excellent battery life and consistent light output ULTIMATE PERFORMANCE  1,000 lumens, this upgrade lightbulb is 7 times as bright as standard flashlight bulbs, perfect for night time illumination, camping, security and much more. Provides a focused flashlight beam PREMIUM FEATURES  choose single or mutli-mode operation, LEDSense gives over-temperature protection in all conditions. Virtually unbreakable LED wont burn out EFFICIENT, BRIGHT AND RELIABLE  with a 4 hour max runtime, the bulb is super reliable and helps to extend the battery life of your flashlight so that you have light when you need it. The LED never needs to be replaced