TFSeven Flashlight Bulb LED 480 Lumens Smooth Reflector T6 Single Mode 3.0-18V Drop-In - P60 Design: Surefire, Hugsby , C2 G2 Z2 P60 P61 6P 9P G3 S3 D2 501B 502B Wide Voltage Range: 3.0V~9V. Extreme distance & tightly held beam Save batteries with 2-3 times the run-time over normal incandescent Never buy bulbs again - LED lifetime over 100,000 hours Smooth reflector for extreme ilumination distance and tightly focused beam