Sandberg Solar Charger 21W 2xUSB+USB-C is a combination of a powerful 10000 mAh PowerBank and a foldable solar panel for fast, efficient recharging in sunlight. Hang it over your backpack when hiking, for example. That way you can always be sure to have power for your mobile devices, no matter how far away the next mains socket is. Water- and... shock-resistant material. Charge your devices with the three USB ports.