Flashlight Bulb LED Upgrade 1000 lumens Smooth reflector CREE T6 .5 Mode 3.7-8.4V Drop-in - P60 design: Ultrafire,Surefire, Hugsby, Etc. Increase your flashlight's brightness up to 1000 lumens Wide Voltage Range: 3.7-8.4V 5 Modes. Smooth reflector for extreme ilumination distance and tightly focused beam Save batteries with 2-3 times the run-time over normal incandescent Never buy bulbs again - LED lifetime over 100,000 hours