Fully automatic inflation and deflation. Stores 99 measurements. Hypertension indicator. Irregular heartbeat detection. Easy to use one touch operation. Time and date stamp to track readings. Automatically adjusts to the proper amount of pressure for a personalized, accurate reading. Large LCD screen displays easy to read digits. Wide range cuff fits most arm sizes 8.7 inches - 16.5 inches. Latex free. 5 year limited warranty. Why monitor at home? Medical experts agree that monitoring your blood pressure at home can be helpful in preventing and controlling high blood pressure. By monitoring your blood pressure at home with the Sunmark Advanced Automatic Blood Pressure Monitor, you can share accurate and reliable results with your doctor. Package contents: blood pressure monitor, wide range arm cuff, quick start guide, quick reference guide, instruction manual, 4 AA batteries, storage case.