Review on Copper GT Nano Flashlight: Powerful 450 Lumens EDC Keychain Torch With 300M Beam Distance, IPX-8 Waterproof, And Compact Design For Bright Mini Light And Key Ring Convenience by Tony Andrews

Bright yes, adjustable brightness yes, expensive yes, battery life very poor. It is not for charging and expecting it to be charged and ready to go in a month. Look elsewhere if that is your requirement. I liked what I saw at first, very small, very bright, nicely machined, but if you leave it in your car, or especially ladies in your purse for an emergency it is not to be counted on. This is not a fluke, I bought two of these, they both drain far too quickly. Considering cost vs. utility I can't recommend this item.