Model: DMS300-ABP Specifications: Time: 24 Hour Measurement Interval: 5, 10, 15, 20, 30, 45, 60, 90, 120 min (Adjustable) Storage: Non-volatile flash memory LCD: Display systolic, diastolic, pulse and indications for monitor current status. Computer Interface: RS232 Size: 123mm, 66mm, 29mm Weight: 270g with battery Power Source: 2 AA Features: Jointly developed by DM Software and Suntech USA. 24-hour ambulatory blood pressure monitoring and data playback. Step deflation oscillometer method, automatic zero adjustment. LCD can display systolic, diastolic and pulse when each measurement is made. Can make up the measurement automatically after failure, to make manual measurement, press the event button. The analysis software can make data table, bar chart, pie chart and correlation line, etc.Database holds all the tested patient information for statistics. Can communicate with computer through USB port, if USB-COM adapter is used.