Product Features THE MOST POWERFUL PERSONAL EKG: 6-leads means 6-times the heart data to share with your doctor for a complete view of your heart EKG ON THE GO: Take unlimited medical-grade EKGs anytime, anywhere. No subscription required. EASY TO USE: Simply place your fingers on the sensors-no wires, patches or gels required. TRUSTED BY DOCTORS: Detect Atrial Fibrillation, Bradycardia, Tachycardia and Normal Heart Rhythm in 30 seconds. Works with most smartphones & tablets. See compatible devices below. Not recommended for use with pacemakers and ICDs.