The Advantage 6021N Automatic Digital BP Monitor is an upper arm digital blood pressure monitor, ideal to use at home. It measures systolic, diastolic pressure and pulse. Smart Logic Technology simplifies the measurement process by determining the ideal inflation level. This device features an irregular heartbeat indicator, automatic inflation and deflation control, and a 99-reading memory with date and time stamp. It works with four "AA" batteries and includes a deluxe storage case.