Fenix E21 LED Waterproof Torch Flashlight LED outputs 150 lumens (2.15 hrs runtime) on high and 48 lumens (11 hrs runtime) on low Tactical push button tail cap switch provides momentary operation when pushed half way Waterproof to IPX-8 Standard; Body Size: 6.5" (Length) x 1" (Diameter); 3 ounces; Powered by 2 AA batteries (Not included)