DB POWER WF 501b Cree Xml T6 3 Mode Cree Led Flashlight 900 Lumens (Generic Packaging) CREE XML T6 with 900+ Lumen 3 Mode Output Battery Used: 1 x 18650 battery (not included) Aluminum alloy casing with o-rings for water resistant design Can be mounted on tactical rail with 1" ring mount Rugged, anodized, CREE LED designed to last 100,000 hours