From the Box: “Accurate and detailed EKG results, medical grade, six lead and provides a determination of your heart rhythm in just 30 seconds.” Stores the information locally on your phone or you can’s also send it to your doctor. Compatible with Apple and Samsung smart phones. Briefly used, but like new condition. I’m including the leather case. We don't need this. No electrical problems with the ticker. These are really expensive online. Check on Amazon.