24-hour ambulatory monitoring means you can measure your blood pressure at different times of the day to see the relationship between blood pressure levels. Automatic shutdown 1 minute automatic shutdown (no operation). Requires 2 AAA batteries Easy to read: Large font on the LCD display lets you see your measurements clearly. The simplified display means you only see exactly what you need to know about your heart health: pulse, systolic pressure and diastolic pressure. Easy to use: adjustable wrist strap. One-touch activation of the monitor means you can measure your blood pressure and heart rate at the touch of a button. Easily measure your blood pressure anywhere. Measure wrist joint, high pressure, low pressure, pulse digital display, can be used by yourself, more stable, more precise. Can automatically store 99 groups of dual measurement results (blood pressure and pulse) Compact Size: Compact and portable size makes it easy to use at home or on the go. You can relax knowing you can monitor your health at any time.