Groov-e Solar-Powered 3600mAh Powerbank Most powerbanks need charging from a computer or wall socket before they can charge your device when you're on the go. This one doesn't. It's able to charge itself using a built-in solar panel - so as long as the sun is shining, you'll always have access to power. Charges a smartphone in less than two hours Can also be charged via USB Includes micro USB, mini USB and Nokia adaptor tips, plus a USB slot Pre-charged and ready to use 4-5 hour USB charge time 25 hour solar charge time H17 x W11 x D2.9cm