For what it's worth, my Doc uses a digital blood pressure monitor, on one of my visits to see him after the heart attack, he decided to up my ramipril (lowers blood pressure) I went to the cardiac rehab session the day after & the nurse commented that my blood pressure was in my boots, she took the reading using the arm band/stethoscope method, I did say that i had been to the docs & had my bp taken with the digital machine, she said that they were notoriously inaccurate & they always over read, apparently the old way is the best, she also got the ramipril dose reduced too as it made me feel dizzy if I got up too quickly, just something to bear in mind when ordering one