Could you confirm if new option sleep pulse ox is works for you ?
I can't enter via web page to this option after activated int he watch.
I can't enter via mobile express there is error and reboot application
robert
I turned on Pulse Ox last night to track during my sleep and I am too seeing the same thing where it only measures for 4 hours. Has this been report to Garmin? I am running on the Beta Firmware, I will report it there too.