Clinically Validated - an FDA-cleared device. Delivers blood pressure and heart rate readings. Take on at a time or three consecutively and get an average. Use the app to add notes see history and trends and more. View 7 day 4 week and 1 year reports in the app and export to a PD. Set up reminders to take readings. Create up to 16 user profiles and track individual readings. Up to 9 month battery life. Folds up for easy storage and travel. Adjustable cuff fits arm sizes from 9"-17" in circumference. Display size: 1.3" x 0.8". Includes 4 AAA batteries.