Question about Garmin Vivoactive 4S

To activate the Pulse Ox function (blood oxygen measurement) on your Garmin vívoactive 4S, follow these steps:

## Activating the Pulse Ox function
- Press and hold the button with the letter "B" to access the settings.
- Select `Settings` > `Wrist Heart Rate` > `Pulse Ox` > `Tracking Mode`.
- Select one of the following options:
- `All Day`: Activates measurement throughout the day.
- Note: This reduces battery life.
- `During Sleep`: Activates measurement during sleep.
- Note: Unusual sleeping positions can lead to abnormally low oxygen levels during sleep.
- `Off`: Deactivates automatic measurement.

## Manual measurement
- Access the Pulse Ox-Glance on your watch.
- Select 'Pulse Ox'.
- Remain silent while the watch performs the measurement.
- Some devices require you to press the 'START' button and select 'Take Reading'. Continue to remain silent until the measurement is complete.