FENIX TK35 2015 version 960 Lumen CREE XM-L2 U2 LED Tactical Flashlight with 4 X EdisonBright CR123A Lithium batteries, Holster & Lanyard bundle Max 960-lumen utilizes Cree XM-L2 U2 LED with a lifespan of 50,000 hours Uses two 18650 rechargeable batteries (Li-ion) or four 3V CR123A batteries (Lithium) Digitally regulated output, maintains constant brightness Made of durable aircraft-grade aluminum This bundle includes 4 X EdisonBright CR123A Lithium batteries, Holster & Lanyard