Digital blood pressure and pulse monitors display reading of systolic and diastolic blood pressure and pulse; date and time. The DS1902 Fully Auto-Inflate Blood Pressure Monitor is Fully Automatic Blood Pressure Monitor with Wide Range Cuff Fits Arm Sizes 9.1 – 16.9 inches (23-43cm). Detects Irregular Heartbeat. Fast, Easy, and Comfortable. AC Adapter Jack. 2 Person 30 Time Memory with Average. Personal Mode Inflation for Ultimate Comfort. IQ System Advanced Technology. Requires 4 “AA” Batteries.