Elevin(TM) 3800 Lumens 3 x CREE XM-L T6 LED Flashlight Torch with 3X 18650 battery (black) The body of this flashlight is built of aircraft-grade aluminum alloy, and it has a very solid construction. Internal wiring applies the high efficient booster circuit, and can utilize the batteries in the largest extent This TrustFire torch uses of a XM-L T6 LED, producing very bright beam of light. Output bright can come to above 3800 lumens (Manufacturer rated) Material :Aluminum ,Hard-Anodized finish; Anti-abrasive, free-scratch, shock-proof.