Let's start by looking at some specifications.
Input - Solar Panel: 5.5V/80mA
Input USB: 5v/300mA
Li-ion Rechargeable Battery: 4440mWh
Output: DC 5.5 V = 500mA
There's nothing too exciting here really. Solar panels in general are a great idea and really should be used a whole lot more than they are. On the battery side of things the C1 Mobile uses a lithium Ion battery to store the sun's rays.
If you want to find out about how solar panel technology works there are many free sources of information out there. My knowledge does not stretch that far unfortunately, so I'm not the man to explain how they work. I just know that they do and well.
Connectivity is well handled with a large assortment of different plugs and adaptors to cater to the wide range of different devices capable of being charged by the C1 Mobile.