Comparison · updated 2026-10-06
Oura Ring 4 vs Oura Ring 5
Wide sizing against a smaller new generation.
Bottom line
Ring 5 is lighter with longer claimed battery; Ring 4 covers sizes outside 6–13.
Scroll horizontally to compare every product.
| Decision | Oura Ring 4 | Oura Ring 5 |
|---|---|---|
| Status | current | current |
| Reference price | $349.00 | $399.00 |
| Three-year hardware + required plan | $564.64 | $614.64 |
| Subscription | $5.99 / month | $5.99 / month |
| Phone support | ios + android | ios + android |
| Sizes | 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | 6, 7, 8, 9, 10, 11, 12, 13 |
| Weight | 3.3–5.2 g | From 2 g |
| Sensors and insights | Red, green and infrared LEDs, Photodetectors, Temperature sensor, Accelerometer. Outputs: Sleep, Readiness, Activity, Stress trends, Cycle insights | Red, green and infrared LEDs, Two photodetectors, Temperature sensor, Accelerometer. Outputs: Sleep and stages, Readiness and activity, Heart-rate and HRV trends, Temperature trends, Cycle insights |
| Battery claim | 5–8 days | 6–9 days |
| Charging | Size-specific charger; typically 20–80 minutes. | Size-specific charger; about 80 minutes. Optional charging case sold separately. |
| Water resistance | Manufacturer states 100 m; not for diving. | IP68; manufacturer states waterproof to 100 m. |
| GPS | No built-in GPS is stated. Supported routes, distance and pace use the phone’s location services; the phone must be carried. | No built-in GPS is stated. Supported routes, distance and pace use the phone’s location services; the phone must be carried. |
| Platforms | Apple Health, Health Connect, Strava | Apple Health, Health Connect, Strava, 100+ integrations claimed |
| Market availability | US (available), CA (available), GB (available), IE (available), BE (available), NL (available), DE (available), FR (available), IT (available), ES (available), PL (available), SE (available), JP (available) | US (available), CA (available), GB (available), IE (available), BE (available), NL (available), DE (available), FR (available), IT (available), ES (available), PL (available), SE (available), JP (available) |
| Evidence note | Oura has the deepest published evidence base, but results remain generation- and population-specific. | Good brand-level evidence for sleep trends; Gen3 validation does not automatically validate every Ring 5 feature. |
| Key strengths | Wide size range; Mature app; Five-to-eight-day claim | Mature interpretation; Broad integrations; Published Oura sleep research |
| Key limitations | Membership cost; Older and larger than Ring 5; Finish stock varies | Membership cost; Narrower size range than Ring 4; Ring 5 claims need generation-specific validation |
How to decide
Start with exclusions
Confirm market, phone, size and required plan first. A product that fails one is not a match.
Then compare uncertainty
Battery and feature claims come from different test conditions. Read each product page’s dated sources and evidence note.
Wellness only. None of these rings diagnoses a condition or replaces professional care.