The Veridian 01-539 is the Smartheart Arm Digital Blood Pressure Monitor. This blood pressure monitor features fully automatic, one-button operation that is easy to use for at-home monitoring. Provides clinically accurate readings while displaying systolic, diastolic and pulse rate simultaneously with date and time stamp. The 2-person memory bank stores up to 120 readings, 60 readings for each user with average of last 3 readings. Hypertension indicator provides an instant comparison to standards set by the world health organization, and the irregular heartbeat detection alerts the user to an irregular heartbeat during measurement.