I like how they did forget to state how much Wh is in the thing. They only state the mAh which in fact doesn't tell enough without saying at what voltage that is stored. The Wh would tell much more, and it would say how much extra time you will averagely get from it. As example, if you have a laptop with 60Wh battery, than a 30Wh powerbank will only add half of the battery life and a 60Wh powerbank will double the battery life (this however does only count when the powerbank provide enough juice so that at least the internal battery doesn't drain while using the powerbank). While talking about mAh it can mean both, it doesn't have to be such a difference but it is possible.