I purchaced mi powerbank 2i 10000mah last year from the mistore.com. It has two ports, and one button to on off. Rhe body and colour is awesome according to my need, and the weight of this powerbank is not ao much, anyone can borrow with them whe never they go out side. It is fully charge 4-5 hours, then i have charge my mobile twice by it, and i have a mobile with 4000 mah battery. One another thing is that this powerbank do not overheated during the charging, and this is very cool feature of it.