Excuse me, does anyone have a charger? Have you not also tried to be in that situation? The smartphone is now the most preferred device to access the internet from, and this places great demands on the indispensable device we all cling to. With a Power Stone 2,600 mAh power bank, you get the equivalent of one full extra charge, and that can get you a long way, e.g. when you use your mobile on the train or on the trip - and for the most part it covers the need. But if you still want to avoid standing with your hair in the mailbox and lack of power, the GreyLime Power Stone also offers capacities of both 5,200 and 10,400 mAh. The latter corresponds to four times extra charging!