With its large start and stop button, the Zewa UAM-720 Automatic Blood Pressure Monitor is simple to use and provides quick results. Wrap the cuff around your arm, press start, and let the pressure monitor do the rest. Additional InformationIncludes one cuff Average function: averages last 3 blood pressure readings Guaranteed accuracy of plus or minus 3mmHg Manufacturer's warranty included - see Product Guarantee area for complete details Fully automatic with PI System. Systolic, diastolic measurement, and pulse rate. Stores up to 60 readings automatically. AC adaptor connection - AC adaptor not included. Manufacturer's warranty included.