The OMRON Evolv blood pressure cuff allows you to track your blood pressure from the comfort of home. Stay on top of your heart health by using OMRON Evolv with the Kardia app to manage your recordings and share them with your doctor for review. Portable cuff, allowing you to take your blood pressure anytime, anywhere. Store your blood pressure recordings on your phone and email to your doctor with the press of a button. Become a KardiaCare member to enjoy exclusive features, including cardiologist EKG reviews, automatic report sharing, monthly heart health reports, and more. Uses four AAA batteries. Works with most smartphones and tablets on Android and iOS. Check if your smartphone is compatible.