Oura Ring 4 vs Samsung Galaxy Ring
 Oura Ring 4 |  Samsung Galaxy Ring | |
| The short answer | About the same Oura's store page promotes a newer ring that is 40% smaller than Ring 4. Compare it before buying the Ring 4. | About the same A titanium smart ring that tracks sleep, heart rate and workouts without a screen, with up to 7 days per charge. It needs a compatible Galaxy phone. |
| China price | Not sold in China | No price yet |
| US price (pre-tax) | $249Best Buy · Checked 11-05 21:07 | $299.99samsung.com · Checked 11-05 21:07 |
| Gap (US pre-tax) | — | — |
| What differs between versions | ||
| China vs US version | — | CN No official China sale US US store page |
| Key specs | ||
| Health features | Sleep Score, Sleep Stages, blood oxygen sensing, nighttime breathing, heart rate and HRV, stress, women's health | Sleep tracking (with snore detection), heart-rate tracking, Energy Score, cycle tracking, automatic workout detection |
| Battery life | 5–8 days; typically charges in 20–80 minutes, depending on battery level | Up to 7 days per charge; up to 14 days with a full charging case charge |
| Water resistance | Up to 100 m / 328 ft | 10ATM (~100 m, ISO22810) + IP68 (1.5 m freshwater for 30 min in lab conditions); not suitable for high-pressure water activities or diving |
| Subscription | Oura Membership, billed monthly or annually | No subscription fee; all health data in Samsung Health is free |
| Phone compatibility | iOS and Android | Requires a Samsung Galaxy smartphone with a registered Samsung account |
| Sizes | US sizes 4-15; use the Oura Ring 4 sizing kit to confirm fit (sizing differs by generation) | Sizes 5 to 15 (per Samsung US support) |