Mio Ling Mai power bank is very easy to use. Miao Ling Mai charging treasure is very good, cost-effective. Charging speed is very fast, large capacity, very convenient to carry, comfortable feel, conscience things are really good to use, going out is necessary artifacts, going out is not afraid of the phone has no electricity, charging for a long time will not be hot, tough quality is very durable. Whether it is a mobile phone, a smart watch, or a headset, it can automatically control the current input.