24 hours monitor for ECG & BP LCD screen 3 work modes 24 hours recording professional ... ECG of each lead, current or past blood pressure, next BP testing time, battery voltage, the cuff pressure value during inflating ... deflating, and the number of beats in the process of BP testing. Visual icons and menu ensure easy access. ECG ... requirements Windows 9x/2000/XP/Vista 3 Channel ECG & BP Holter System