BP2208 has applied its high-tech measurement technology to monitoring blood pressure from the wrist - all with the push of a button! This compact, light-weight wrist monitor provides accurate readings in a convenient travel size. The automatic memory function records the last 120 measurements in 2 groups for efficient tracking. The Last 3 Results Average feature automatically calculates average readings stored in memory. An Irregular Heart Beat detector automatically alerts user when heart rhythm is either 25ï… faster or slower than the average rhythm detected during the measuring process.