Mi Band is a device that lets you know more about your body; your health. The Mi Band is really durable and reliable. You can get all the information about how many steps you took, your heartbeat, number of calories you burnt. It is really easy to use. You just need to connect your phone with it via blootooth. It is very cheap from other fitness bands and accurate than other bands. Its design is very sober and simple and it looks great when on the wrist. Its battery life is very long. On a single charge it runs upto 7 or more days.