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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OURA Ring 5 smart ring in matte silver, size 09 (19). It measures blood oxygen, heart rate, heart rate variability, respiratory rate, temperature trends, movement, and activity.
Battery runtime per charge is up to 6–9 days depending on ring size and usage intensity. Charging takes about 80 minutes depending on battery charge level. The manufacturer warranty is indicated as available; its value is listed as 12 with the unit not specified.
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