The product sensor quality is very poor.
The step counter is in accurate by about 40% .distance counter under reports by more than 50%.pulse counter does not work on the wrist.only functional parts are the watch and the notifications.
I am runner and got this band specifically to measure distances and pulse rate during my run.given the kind of inaccuracies, this band is completely useless to me. Do not know if the product has been tested .the app is another story. In itself.its very poorly designed. All in all simply not worth your money.put in a little more and you get better bands.