Theres only one word to describe it-RUBBISH. If you really care about your money then please dont buy it. Its a total wastage of money. At first the band looks good but as soon as you start using it you will come to that its a piece of trash. Bought it 20 days ago and I am really not satisfied.It measure wrong steps, wrong calories burnt and is also not able to track my sleep correctly. There are many bands in the market which do a lot better than this. I recommend to buy Lenovo HW01 or Mi band 2 instead of this.