Disclaimer: Due to health regulations and clearances, some ScanWatch 2 features may not be available or may not have clinical validation in your region. Learn more.
FAQ Updated: July 2025
How does ScanWatch 2 provide an electrocardiogram?
ScanWatch 2 includes two electrodes to ensure measurement accuracy. One electrode is discreetly integrated inside the main body of the watch, and the second electrode is in the stainless steel upper ring (the bezel) of the watch. Users simply need to touch both sides of the bezel to start recording ECG anytime and anywhere.
Is it a medically-approved measurement?
We led several clinical studies to compare Withings ECG App (the name of the ECG feature within ScanWatch 2) measurements with the gold standard and assess its medical accuracy. Withings ECG App has received FDA clearance in the United States. ScanWatch 2 has received CE medical certification in Europe. This validated and certified software has been integrated into ScanWatch 2.
How can I see the results?
When users experience symptoms, or if they are alerted to an abnormal heart rate (for non-US users only), they can easily take an ECG in just 30 seconds. During the measurement, users can see the live electrocardiogram displayed on the watch screen or in the accompanying Withings App. Once the reading is complete, the results can be viewed both directly on the watch screen and in the app. A history of all recordings, their associated classifications, and any noted comments or symptoms are stored in the app. All data collected can easily be shared with a doctor or healthcare professional.
How can I share my results or act on them?
Data collected by ScanWatch 2 and visualized in Withings App can easily be shared with a doctor or healthcare professional, which can help assist with an early diagnosis. Early diagnosis could help to prevent more serious complications.
Does my by-pass have an effect on my ECG measurements?
Cardiac bypass, which consists in supplementing the coronary circulation by placing leads downstream of obstructions, does not modify the electrical activity of the heart. Therefore, the ECG recorded by Withings ECG App remains identical to the one that can be recorded in the classic case.