Sandberg Solar Charger 21W 2xUSB+USB-C is a combination of a high-capacity 10000 mAh powerbank and a foldaway solar panel, for fast, efficient recharging in sunlight. Hang it on your rucksack while hiking for example. You can always be sure to have power for your mobile devices, regardless of how far you are from the nearest mains socket. Water- and shockproof materials. Charge your devices using the 3 USB ports.