Upper arm blood pressure monitor that helps to measure blood pressure automatically. It has inflation measurement technology that detects the amount of air that the 22-42cm cuff needs to measure. It also contains a large display and AC/DC connection socket for transformer. Detects an arrhythmia or calculates the average morning and evening values for the last 7 days Includes: 1 storage case, 1 sphygmomanometer and 4 AA batteries.