Excellent product!
I have used this power bank for a few weeks now. I am extremely pleased with it. The power bank has an extremely sturdy build, with smooth edges on the longer sides. Ive roughened it quite a bit already, but it is holding up really well. The interface is minimal, with three ports, 2 USB outputs and a microUSB charging port. There are 4 indicator lights, which are quite small. They are comfortable and pleasing to the eyes. I love that their functionality is optimised for minimal battery drainage unlike a lot of other power banks in the market.
The device itself is extremely powerful, capable of charging all my devices, including a phone, a tablet and a Bluetooth speaker several times over before completely discharging.
I would recommend this product strongly everyone. It is especially useful for travellers and lazy people.