Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
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A smart ring in size 07 (17.3) and rose gold. It tracks blood oxygen, heart rate, heart rate variability, respiratory rate, temperature trends, movement, and activity using its listed sensors.
Battery life per charge is up to 6–9 days depending on ring size and usage intensity. Ring charging takes about 80 minutes depending on battery charge level. The separately sold Oura Ring 5 charging case is stated to provide device operation for the whole day with 10 minutes of charging.
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