Kardia lets you take an active role in your heart's health by giving you the ability to record medical-grade EKGs anytime, anywhere, easily. 16 bit resolution, In just 30 seconds, Kardia shows you whether your heart rhythm is normal or if atrial fibrillation (a leading cause of stroke) is detected in your EKG. Kardia delivers accurate results, and makes it easy to share EKG data with your doctor for analysis and diagnosis.