Good device, but transferring data to the mobile is slow and you have to open the application for it to happen (on my scale it happens without opening the application). Also, it is expensive, I had bought exactly the same, different brand though, at 1/3 of the price...

The product seems very good and reliable in the few measurements I have made so far, I am not giving it a fifth star just because I have had it for a short time.

It seems like a quality device. It is not used frequently, so I don't have an opinion on the battery yet. And the measurements seem to be accurate (compared to a reliable blood pressure measuring device). I think it's worth the money.