Fenix TK16 1000 Lumens Cree XM-L2 (U2) LED Tactical Flashlight, ALG-01 Picatinny/Weaver Weapon Rail Mount, AER-03 Pressure Switch and Two EdisonBright CR123A Lithium Batteries Bundle New 1000 Lumens uses Cree XM-L2 U2 LED with a lifespan of 50,000 hours. Powered by one 18650 rechargeable Li-ion battery or two 3V CR123A Lithium batteries (Both supplied) Weapon mount ready kit Instant Strobe mode Bundle includes Fenix ALG-01 mount, Fenix AER-03 silent pressure switch and Two EdisonBright CR123A lithium batteries