Stopped because after we started enrolling we realized that we could not get the information that we wanted out of the current protocol. The information we wanted to compare would not be able to be collected.

It is an attempt to see the reliability of the Wearable Smart Watch in identifying atrial fibrillation and other arrhythmias compared to the data detected from ILRs.

The sensitivity, specificity, positive and negative predictive values for successful identification of normal sinus rhythm, atrial fibrillation and other rhythm disorders from the smart watch will compared to that of an ILR.

Inclusion Criteria:

• Age over 18 years old
• Patients who have an implantable loop recorder for heart rhythm monitoring purposes
• Having IOS iphone device that can be integrated into Apple Watch
• Willing to sign a consent form and participate in the study

Exclusion Criteria:

• Hemodynamically unstable patients
• Over 90 years of age
• Presence of wrist tattoos
• Presence of AV fistula on the wrist on which the wearable is worn. (If the contralateral wrist is unaffected, those patients can be included)
• Presence of Implantable Cardiac Pacemaker and/or ICD
• Patients with Parkinsons disease or tremors