In terms of capacity, it would make sense to over 3 Fully recharge my iPhone but in fact just three. So either there is perdition in energy or it has a lower capacity to 5000 mAh announced.
Nevertheless it is very good and thanks to its port 1.5 A, charging my phone rather quickly. By putting it in airplane mode, the full charge is made in 1:10.
Given the size and capacity I'm really happy.