I have recently bought this band on MI sale at 1? only. Hehe yes its true. Otherwise the band actually worth around 700-800?. Anyway I have being usinng since one month. The features it provides is pretty cool for the value of money. Vibration sensor is awesome. Accurate and up-to-date with super cool features. The price is cheaper then the other smart fit bands in the market. MI has proven himself in cells. Now time for BANDs. Think no more. It works well.