When the Google Glass concept debuted in June 2012, it became one of the most anticipated gadget launches ever—rivaling the first iPhone. For all intents and purposes, Project Glass, as it was then called, promised Terminator vision, a hovering overlay of information as crisp as a 25-inch HDTV. Impossible as it sounds, the product, which came out as a developer version in April, goes beyond that pledge: It’s like wearing a piece of the future.
A single Hydrogen Reactor cartridge carries a week’s worth of smartphone power—more juice than any other portable source. When a user inserts one of the 3-inch cartridges into the Reactor, a catalyst frees electrons from hydrogen. The freed electrons move into a circuit that delivers power to gadgets over USB