This compact rechargeable polymer Xtreme Lumens tactical flashlight uses a CREE? LED rated at 800 lumens that works in conjunction with a high-efficiency deep parabolic reflector to create a usable beam rated at 205 meters. ?The tail-cap switch provides momentary or constant-on functionality. ?The housing is made from glass-filled nylon polymer. ?Power comes from a rechargeable Lithium-ion battery and includes the ability to run from a pair of CR-123 batteries (batteries not included) thanks to the CR-123 Battery Carrier (included).