With the A & D One-Step Memory Automatic Blood Pressure Monitor, you can easily take accurate blood pressure and pulse rate measurements from the comfort of your home. This fully automatic monitor inflates the cuff to the correct pressure each time a measurement is taken. Simply slip on the cuff and press the Start button on your monitor. The monitor's display provides a simultaneous readout of systolic/diastolic pressure and pulse rate, allowing you to manage your health without hassle. The monitor stores your last 90 readings in its built-in memory and also displays average readings. The average reading feature automatically calculates and displays the average of all readings stored in memory. The monitor also has a unique Irregular Heartbeat feature that alerts you to the presence of an irregular heart beat during reading. The monitor provides blood pressure and pulse rate measurements even when an Irregular Heartbeat occurs. Blood pressure measurements determined with this device are equivalent to those obtained by a trained observer using the cuff/stethoscope auscultation method within the limits prescribed by the American National Standards Institute (ANSI/AAMI SP10) for electronic sphygmomanometers. NOTE: Batteries and power adapter not included. Cuff Size: Small.