LAS VEGAS--The Eton BoostSolar sports a 5-inch solar panel on one side...
...On the other side, it has a battery bay that house a 4,000mAh lithium battery.
The battery pack is thin, rugged, and very light.
The battery, when full, has enough juice to charge an iPhone from empty to full twice.
It comes with USB ports to be charged directly from a regular standard USB charger.
The charger also comes with USB ports to charge and to be charged using regular standard USB chargers from a wall socket.