Fits all Krypton / Xenon Maglite S3D015/16, S4D015/16, S5D015/16 and S6D015/16 series flashlights Light output can be up to 525 or 55 lumens. 55 lumen low mode particularly suitable for reading. Light duration up to 16 days with alkaline D cell batteries. Easy to change like a regular bulb change. Integrated overheating protection to avoid any damage caused by heat. Energy-saving up to 10 times more light than with Krypton bulb. High impact and vibration resistance. 5 Year Warranty. For newer Maglite (Bi-Pin) the white adapter also needs to be removed (simply pull out). Original Maglite LED Flashlights cannot be modified using this Litexpress Led module.