CREE Xml-T6 820 Lumen 3-Mode Replacement Upgrade Drop-In Bulb Parts Pelican M6 Surefire Solarforce Lumaforce Ultrafire Tank P60 Comes with a lifetime warranty if purchase through ArizonaTacticalGear Shook Proof, Drop Proof, & Recoil Proof Save batteries with 2-3 times the run-time over normal incandescent 3 Modes of Operation (High, Low, Strobe) controlled with soft click of tail switch Smooth reflector for extreme ilumination distance and tightly focused beam