How to record an ECG with ScanWatch

Press the side button once to wake up the watch, then rotate it to find the ECG screen and press the button again to launch the measurement. Gently place your fingers on the bezel (top ring) for 30 seconds. Stay still, do not move or talk, and relax — it is best to be seated, place your arm on a table or chair arm, and keep the palm of your hand open and flat. The end of the countdown on the screen and a vibration of the watch will notify you that the reading is complete.

What actually happens

By placing the opposite hand on the watch, you create a closed electrical circuit with your arms and chest, allowing the measurement of a single-lead ECG.

After each measurement, Withings ECG devices provide the following:

• A heart rate measurement

• A Lead I ECG tracing

• A rhythm classification (normal sinus rhythm, atrial fibrillation, or inconclusive)

Tips to improve your signals

1. Before the measurement, tighten the band so that the back of the watch is in contact with the skin of your wrist.

2. Make sure you have been resting for at least 10 minutes after your last workout session.

3. Sit down and rest your arm and elbow on a table, with your hand relaxed and in an open position.

4. If needed, during the measurement, slightly press the top of the watch on your wrist.

The following gesture is recommended for recording an ECG:

The following gestures should be avoided:

Note: the wristband must be tight. Wearing any band other than silicone, FKM, or equivalent material can make it more difficult to get a conclusive ECG result.