Electronic Blood Pressure Monitor has been designed with quality and convenience in mind. This wrist blood pressure monitor is fully automatic and can speak in English the testing results with voice which is a big benefit to those that have issues with their vision. And the voice gives you a diagnosis if the measurement is within the normal range or not.The monitor features a large digital screen and also has the ability to detect an irregular heartbeat. Batteries are not included. It needs 2 AAA batteries.