The Norditalia BP-520 is a compact, attractively presented wrist-type blood pressure monitor. This many-featured monitor can record and store measurements from either one or two persons. It will calculate and store the average of three readings taken during the course of a day, or the last three measurements that were taken. The monitor features a large, easy to read display, touch-type control buttons, and a 2x 90 memory for two users. It also features irregular heartbeat detection. The monitor operates on two AAA batteries.