The logistics are fast, and i started using it as soon as i received it. I have been using it for a few days now and it feels pretty good. Firstly, in terms of size, it is very thin and easy to carry. Then, the performance in all aspects of charging is very stable, the discharge speed is very smooth, and charging does not cause overheating. Suitable for my android phone, with real capacity. I can't find any shortcomings.