24 hours monitor LCD screen 3 work modes 24 hours continous work ... and reports The BELSON 3 channel 2in1 Holter/ABPM monitor for 24 hours boasts advanced high resolution Holter technology ... each lead, current or past blood pressure, next BP testing time, battery voltage, the cuff pressure value during inflating and deflating, and ... requirements Windows 9x/2000/XP/Vista 3 Channel ECG & BP 24h monitor