The Oura Ring 5 is the more expensive of the two trackers, starting at $399 for the basic finishes. The Garmin Cirqa lasts 10-11 days; the Oura Ring 5 lasts around nine days, depending on the size of your ring. With the Garmin, you’ll see all your data on the Garmin Connect app, whereas Oura uses its own app. A lot of nights, the ‘awake’ part of my Oura sleep graph was at the beginning of the night. If only Garmin and Oura could relay that information to my toddler.