When useing lithium battery please donot let battery die, this bulb use up battery energy fast. When energy is not enough,then flashlight brightness will not as fully charged battery!!! That is why i say Max 1000lm.
Note:Brand new all goods are from China mainland Ultrafire factory directly QC tested before shippping
Flashlight Model: UltraFire
Surefire style crenellated strike bezel for enhanced self-defense
Also designed to mount on certain hand pistols, rifles and shotguns with proper mounting equipment
Bulb: Cree XM-L T6 Max Lumens(manufacturer related)