The upper arm blood pressure monitor BM 58 impresses with its large black display and touch buttons. You can quickly and easily measure your blood pressure, save the readings, and view the trend as well as the average of the measurements. You will be alerted in case of any existing heart rhythm disturbances. The PC connection allows you to create a detailed archive on your computer for long-term comparison. It features a World Health Organization (WHO) indicator and arrhythmia detection (heart rhythm disturbances).