Oura Ring 5
Oura Ring 5
Big changes start small
Ultra-thin and 40% smaller than Oura Ring 4. Designed to wear like jewelry. Made to move with you, every day.
Track 50+ health metrics with research-grade accuracy for a clearer view of your holistic health and wellbeing.
6-9 days* of battery life. A rebuilt battery and tuned firmware make the smallest Oura Ring the longest-lasting yet.
Your body talks, Oura translates
Oura Membership unlocks personalized insights, an AI health companion, and new features as they arrive — all in the Oura App. Available on iOS and Android.
Frequently Asked Questions
Oura Ring sensors have been tested against laboratory results in multiple validation studies. With a pulse signal up to 100x stronger than wrist-based devices, Oura Ring 5 delivers data you can trust.
Oura Ring 5 is waterproof up to 100 meters (~330 feet), meaning that you can wear it while showering, swimming, or partaking in recreational diving (e.g. snorkeling), but we don't recommend using your Oura Ring while scuba diving or keeping it submerged underwater for over 12 hours. Chlorine will not damage it.
Oura Ring operating temperature ranges from -10-52°C / 14-125°F. You can safely wear your Oura Ring in the shower, hot tubs, saunas, ice baths, and cryotherapy tanks. However, extended exposure to extreme temperatures (below -20°C / -4°F or above 60°C / 140°F) may lead to battery damage.
Oura Ring gives a complete picture of your health, including:
- Readiness
- Sleep
- Activity
- Daytime Stress and Resilience
- Heart Health: Cardiovascular Age and Cardio Capacity
- Women's Health: Cycle Insights, Pregnancy Insights, and Menopause Insights
One charge lasts up to 6-9 days of battery life, depending on ring size and usage*
We recommend you use an Oura Ring sizing kit before selecting your Oura Ring size. The kit includes plastic ring sizers corresponding to Oura Ring sizes, which differ slightly from standard ring sizes (note: half sizes are not available).
For accuracy, wear the sizing ring for at least 24 hours, including while sleeping, before finalizing your size. If you're between sizes, we recommend choosing the smaller size for a more secure fit.
Oura Ring Size Chart
| Oura Size | Inner Circumference (mm) | Inner Diameter (mm) |
|---|---|---|
| 6 | 49.3 | 15.7 |
| 7 | 51.8 | 16.5 |
| 8 | 54.4 | 17.3 |
| 9 | 57.0 | 18.1 |
| 10 | 59.5 | 18.9 |
| 11 | 62.1 | 19.8 |
| 12 | 64.6 | 20.6 |
| 13 | 67.2 | 21.4 |
To measure your finger, wrap a strip of paper around the base of your finger, mark where it overlaps, and measure the length in mm — that's your inner circumference. Match it to the table above.
Upgrading is easy. Just add Oura Ring 5 as a new device in the Oura App — no new Membership needed. You can also connect more than one ring and switch between them.
📦 What's Included
- Oura Ring 5
- Size-specific standard charger
- USB-C cable
Technical Specifications
❤ Sensors
Red and infrared LEDs measure blood oxygen levels
Green and infrared LEDs alternate to measure heart rate and heart rate variability 24/7 and respiration rate
Digital sensor measures temperature trends
Accelerometer tracks movement and activity 24/7
✓ Compatibility
Available on iOS and Android
Oura App is available in Arabic, Chinese (Traditional and Simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Spanish, and Swedish.
Supports metric and imperial units of measurement
Integrates with 100+ apps
📐 Weight and Dimensions
Width: 6.09mm
Thickness: 2.28mm
Weight: From 2 grams (depending on ring size)
🔋 Battery Life
One charge lasts up to 6-9 days of battery life, depending on ring size and usage*
Charges in about 80 minutes, depending on battery level
A full day of battery life in 10 minutes with the Oura Ring 5 Charging Case (sold separately)
◯ Quality Materials
High-performance titanium exterior
Seamless titanium interior
Waterproof up to 100m/328 ft
IP68 rated for water and dust
📶 Connectivity
Bluetooth Low Energy
Automatic firmware updates via Oura App
EMF-safe
Supports airplane mode
FCC-certified
*Battery life and longevity depend on Oura Ring size, Oura App settings, feature configuration, activity, battery age, usage, and many other factors; actual results will vary. Battery life and charge cycles vary by use and settings. Battery tests were conducted across various sizes and scenarios.