The Oura Ring 5 shrinks Oura’s smart ring formula into its smallest body yet: a fully titanium ring just 6.09 mm wide that still tracks more than 50 health metrics. Red and infrared LEDs measure blood oxygen, green and infrared LEDs follow heart rate, heart rate variability and respiration around the clock, and a digital sensor watches temperature trends while you sleep. Oura rates the battery at six to nine days per charge despite the smaller frame, with a full recharge in about 80 minutes. Full insights live in the Oura app and require the Oura Membership after a free first month.
Key specs
| Metrics | Tracks 50+ health metrics |
|---|---|
| Sensors | Red + infrared LEDs (blood oxygen SpO2); green + infrared LEDs (heart rate, HRV, respiration, 24/7); digital temperature sensor; accelerometer |
| Battery | 6–9 days per charge by size/use; full charge ~80 minutes |
| Body | Full titanium, 6.09 mm wide × 2.28 mm thick (40% smaller than Ring 4) |
| Water resistance | 100 m / IP68 |
| Sizes / finishes | Sizes 6–13; finishes Silver, Black, Gold, Deep Rose, Stealth, Brushed Silver |
| Membership | Full features require the Oura Membership (first month free for new members) |
Best for: Sleep and recovery trackers who want detailed health trends — sleep staging, readiness, temperature — in a ring that looks like plain jewelry and lasts most of a week per charge.
Skip if: You don't want another subscription: the ring's full insights sit behind the Oura Membership, and if you already wear a capable smartwatch, the ring's data largely overlaps with what's on your wrist.