The A&D Medical UA-767F Premium Blood Pressure Monitor is an advanced digital BP machine that provides accurate and reliable results in an easy-to-use device. This device is clinically validated for accuracy to meet the international protocol set by the European Society of Hypertension and automatically checks your blood pressure and stores the results for you in memory - up to 60 measurements per user (up to 4 users). Because this blood pressure monitor allows for multiple users, the cuff is designed to fit most people (cuff fits 8.6" to 16.5" arms). Simply slide on your arm, adjust, and follow the instructions in the manual. The pump uses gentle inflation to help make taking your blood pressure as comfortable as possible. Other features include an Irregular Heartbeat Detector and a Pressure Rating Indicator that shows if your readings are high, low, or normal (according to standard guidelines). The cuff fit error message and the body movement sensor help prevent inaccurate measurements. Included in the blood pressure monitoring kit are the blood pressure monitoring device, the wide range blood pressure cuff, and an instruction manual. Runs on four (4) AA batteries (included) or an AC adapter (available separately). Need help? Our dedicated customer care team can be reached at (888)726-9966, and they can answer any questions or concerns you might have with your monitor. A&D Medical is a doctor recommended brand of health monitoring devices designed to help patients and their families track and troubleshoot with their doctors, all from the comfort of their homes. The technology in the blood pressure monitors, activity monitors, scales, thermometers, and smart devices help make keeping track of your health easy.