The UAM-880UA Automatic Blood Pressure Monitor uses Zewa's exclusive PI SystemTM (Personalized Inflation System) which provides a faster, more comfortable and more accurate reading. Simply wrap the cuff around your arm and press the large START/STOP button. In seconds your blood pressure and pulse are displayed on an easy to read large LCD display along with date and time the measurement was taken. This unique blood pressure monitor also categorizes each reading into normal, pre-hypertensive and hypertensive readings, giving you an easy to understand indication if your blood pressure is too high. It automatically stores 2 x 60 readings for 2 users. The UAM-880UA also includes Zewa's new advanced average function averaging all readings and all AM/PM readings to detect morning hypertension. The UAM-880UA includes a Universal cuff which fits arm sizes 8.7 Inch to 18.9 Inch. If this cuff is too large or small, take advantage of our free cuff exchange (valid within 30 days of purchase date on unused cuffs only).