I chose this model for its ability to transfer data to a PC and print them for my doctor. I am very satisfied. Do not speak German Comments georicou were helpful in finding me the trick to upload data to the computer .. .. Warning installing the supplied software on the small CD before connecting the USB cord is actually a modem, otherwise Windows can not find the right driver ... After comparison with the data collected by the nurse who goes with his own device during checks on my NAV, I am reassured this apparatus seems accurate. Now just see if it will hold in time, at least it seems to me seriously.