well right from the picture it cried Ultrafire Wf-501 knockoff....
You are blessed! The bulb is surefire type as it seems. Measure the reflector, is it 26.5mm wide? If it is
Sit well here are your choices
Surefire bulbs
Lumens Factory bulbs
G&P bulbs
Ultrafire bulbs
THEN you have the LED module Choices:
ALL THERE IS TO KNOW ON THEM
Sources for buying
lighthound.com
batteryjunction.com
pts-flashlights.com
kaidomain.com & dealextreme.com & ultrafire-shop.com for cheap knockoffs
And any other retailer that appears on the above mentioned thread!
Suggestions: Dealextreme for sku.1447 LEd module and a cheap xenon bulb.
Higher dollar
-Lighthound for Lumens factory xenon and the own led module
-PTS-flashlights for Lumes factory and Wolf-eyes LED module
-batteryjunction for SUrefire LED & Xenon
You may be the most fresh member, and maybe you feel desperate with a seemingly unsolved problem, but dadam! we solve problems here!
Welcome, Enjoy the forum, and keep your wallet (in-the) Safe
Kostas
ehmmm....would appreciate if you added more indo in your profile...