Specification:Product name: Astrolux S2 Flashlight Shell HostMaterial: CopperWeight: about 300gSize: 125mm x 35mm(length x body diameter)Package included:1 x Astrolux S2 Flashlight Shell Host (not included driver and led)1 x smooth reflector1 x spring1 x pill1 x aluminum ring1 x lens1 x switch cover1 x o-rings1 x box1 x clipSuitable Driver click here: Driver