For a doobuster price of US$20.00 at Evike.com as of this writing, this is a good everyday companion... "A very cool tactical and practical light used for Airsoft, Every Day Carry (EDC) and Tactical/Survival situations. Inspired by Iron Man's ARC reactor, the Evike.com G&P Nano light features high power in an unbelievable compact size. With an output equivalent to a car light, the G&P Nano light is the size of a normal AA battery. Best of all, the Nano light is equipped with integrated A.I. controller allowing you to quickly switch between dim light, full light and S.O.S. strobe modes. It is more than just a powerful hand-held combat light, but a personal light that fits comfortably into your pocket for your everyday use."