Samsung Galaxy Ring
Rating applies to: Consumer wearable estimates of sleep and heart rate. It is not a rating or endorsement of Samsung Galaxy Ring as a company or of its quality, safety or results.
According to the company, a titanium smart ring with heart-rate, skin-temperature and motion sensors that tracks sleep, heart rate and heart rate variability, with battery life of up to 7 days and insights in the Samsung Health app without a subscription. It requires a compatible smartphone, and some features require a Samsung Galaxy phone.
Descriptions are based on publicly available information and are not independently verified. Features, pricing and availability change; confirm with the provider.
About this evidence rating
A systematic review found commercial wearables accurate for heart rate in laboratory settings but variable by manufacturer and device, and a meta-analysis found consumer wrist-worn sleep trackers differ from polysomnography on measures such as total sleep time, sleep efficiency and time awake. Heart rate variability (HRV) estimates are less consistent: a 2022 validation of six devices found agreement with ECG ranged from poor to almost perfect depending on the device and when it sampled, and a 2026 study of a Garmin wrist sensor found close agreement with ECG for resting heart rate but limited agreement for HRV, so the authors judged it suitable for tracking a person's own trends rather than absolute values. Proprietary scores (e.g., 'readiness' or 'recovery') are not validated clinical measures. The rating applies to the category of device, not to any brand. Updated October 20, 2026 to add the HRV studies; the rating did not change.
This is an editorial opinion based on publicly available research, not medical advice or a regulatory determination. How ratings work. Last reviewed October 16, 2026.
Things to consider
- Use trends rather than single readings; these devices do not diagnose medical conditions.
- HRV numbers are not comparable across brands, because companies use different formulas and measurement windows; compare a device only with its own past readings.
- Subscription requirements and features change; check the company's current terms.
- See a clinician for symptoms such as chest pain, fainting or palpitations.
- Pricing
- Pricing varies; check the provider's site
- Regions (as reported; verify)
- Global
Sources
- Lee YJ et al. Performance of consumer wrist-worn sleep tracking devices compared to polysomnography: a meta-analysis. J Clin Sleep Med 2025
- Fuller D et al. Reliability and Validity of Commercially Available Wearable Devices for Measuring Steps, Energy Expenditure, and Heart Rate: Systematic Review. JMIR Mhealth Uhealth 2020
- Miller DJ, Sargent C, Roach GD. A Validation of Six Wearable Devices for Estimating Sleep, Heart Rate and Heart Rate Variability in Healthy Adults. Sensors (Basel) 2022
- Casanova-Lizón A et al. Pulse vs. R-R Interval: Validity and Reliability of the Garmin Elevate v4 Sensor for Ultra-Short HR and HRV Monitoring in Healthy Adults. Sensors 2026
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Longevity Ledger provides general information, not medical advice. Ratings are editorial opinions based on publicly available information. Consult a licensed clinician before changing medication, hormones, supplements, testing or training. Some links are affiliate or sponsored links; see our affiliate disclosure.