http://solepowertech.com/how-it-works/
I was chosen to be a beta tester. I never got a chance to actually beta test because they had unexpected changes in schedule but I've talked at length with one of the main engineers and it's supposed to be a very potent device. Charging something like an Iphone will be child's play.
After doing some calculations with him I learned that in all probability I'd be able to very easily charge something like a sherpa 50 battery from goal zero with room to spare.