Garmin has wrapped up its latest round of beta development for the Forerunner 965 and associated smartwatches like the cheaper Forerunner 165. Rolling out globally now, System Software 23.20 brings dozens of changes to the table like the ability to detect breathing variations during sleep.https://www.notebookcheck.net/Garmin-releases-major-new-Forerunner-smartwatch-updates-with-dozens-of-new-features-and-bug-fixes.1015995.0.html
No breathing information on 955 and 255.