We were a little skeptical of claims that the Joos Orange offered 6 to 20 times more sun-to-power conversion than its competitors. But Giz editor Brian Lam tried one recently and says it's the "best solar charger [he'd] ever tested."
He reports that it's rugged, works in weak light and can charge an iPhone four times with just one full charge. The unit itself is a bit heavy, but still, what's a little heft when you can finally realize that elusive dream of (effectively) charging gadgets with the sun, and for only $100.
Wired has a more detailed review, and they loved it, too:
The Joos Orange solar charger is the physical manifestation of simplicity. It's rugged, easy to store and carry, and (most importantly) quick to bestow a watt or two whenever you need it. Simply choose the correct adapter (the Orange comes with seven of the most popular ones), plug in your depleted phone or DS into the charger and let the life-giving juice flow. Yep, that's it.