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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This smart ring measures blood oxygen, heart rate, heart rate variability, breathing rate, and temperature trends, and tracks movement and activity. It is compatible with iOS and Android and integrates with more than 100 apps.
Battery runtime is up to 6–9 days per charge, depending on ring size and usage intensity. Charging takes approximately 80 minutes, depending on battery charge level. The separate charging case is sold separately; 10 minutes of charging provides all-day operation.
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