Oura Ring Generation 3
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SensorsInfrared optical pulse, 3‑axis accelerometer, gyroscope, temperature sensor, SpO₂ sensor
Battery life4‑7 days per charge
Charging methodMagnetic dock (≈80 min full charge)
Water resistance100 m (suitable for swimming)
Why people are buying it
The Oura Ring Gen 3 is a smart ring that continuously monitors sleep, activity, heart rate, body temperature and blood‑oxygen levels. It provides a readiness score each morning to help you optimise recovery and daily performance.
What it does well
- Accurate sleep and readiness analytics
- Long battery life for a ring‑type device
- Discreet, lightweight design
- Comprehensive health metrics (HR, Temp, SpO₂)
What to weigh
- Higher upfront cost
- No built‑in GPS
- Requires subscription for full insights
Specifications
| Sensors | Infrared optical pulse, 3‑axis accelerometer, gyroscope, temperature sensor, SpO₂ sensor |
| Battery life | 4‑7 days per charge |
| Charging method | Magnetic dock (≈80 min full charge) |
| Water resistance | 100 m (suitable for swimming) |
| Connectivity | Bluetooth 5.0, compatible with iOS 14+ and Android 8+ |
| Materials | Titanium shell with ceramic coating, available in silver, black and stealth finishes |
| Weight | ≈4‑5 g |
From published manufacturer information. Check the store listing for the exact variant.
How it compares
| Product | Battery life | Water resistance | Sensors | Price (US) | Sleep tracking accuracy |
|---|---|---|---|---|---|
| Oura Ring Generation 3 | 4‑7 days | 100 m | HR, Temp, SpO₂, Accelerometer, Gyroscope | $299‑$399 | High |
| Whoop Strap 4.0 | 5‑7 days | 50 m | HR, Accelerometer, Gyroscope | $30‑$40/month subscription | High |
| Fitbit Charge 6 | 7 days | 50 m | HR, SpO₂, Accelerometer, GPS | $149‑$179 | Medium‑High |
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