After you changed an "Activity info" to Google Calendar in the watch settings, keep the watch connected and:

  1. Enter the code from the watch screen to google.com/device and log-in
  2. Wait at least 5 minutes until the watch loads your primary calendar automatically


(Optionally) You can add more calendars by entering their ids (typically a mail). Paste them from Google Calendar settings to Garmin mobile Connect settings of the watch separated by spaces. Learn more about the calendar settings and behavior

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