My Bernina usually lets me know when I don't have thread or when the thread breaks, but not when the bobbin runs out, but it continues to run. I was talking during a Ricky Tims seminar to some Bernina excecutives and asked for the ability of the machine to beep when the bobbin is out. My Brother embroidery machine stops when the bobbin is out or the thread breaks. They said they are working on it but don't know for when. I don't want to imagine the price when they do develop the technology.