Powerbank has became a necessary device for day to day use. There is heavy use of mobile phones by the people. I have used the Mi Powerbank 10000mAh since few days. I am having the powerbank which is Silver in color. It is good powerbank. It charges my mobile phone nearly about three times. It charges my phone very fast. The powerbank is light in weight and is easy to carry everywhere and it is worth buying the product at this price range. Mi has give an amazing device for the persons who are on heavy use of mobile phones, tablets. Thanks to Mi for giving such a good device for the charging the mobile phones.