Quickly, comfortably, and accurately check your blood pressure with the HoMedics? Automatic Arm Blood Pressure Monitor featuring Smart Measure? inflation technology and an excessive body motion detector. It offers pregnancy accuracy, even during preeclampsia, and automatically checks your results against the Risk Category Index. With an LCD display and one-button operation, it?s easy to read and use. Powered by the 4 included AAA batteries for portability.