The Atom is a lightweight bicycle generator and rechargeable battery pack designed to power virtually any of your electronic or mobile devices via USB. The generators mount on most standard bicycle frames quite easily, and the battery packs detach quickly. As you ride, it harnesses the kinetic energy you generate. It can either directly charge a device or charge the detachable battery pack. It weighs about the same as a paperback book, and charges quickly. Pretty cool idea if you ask me!