Oura Ring: Smart Ring for Health and Fitness
Oura Ring 4 is a smart ring that tracks more than 20 health metrics 24 hours a day. Unlike fitness bands and watches, it looks like regular jewelry and weighs only 4-6 grams.
What is Oura Ring?
Oura Ring is a ring tracker from the Finnish company Oura Health. The ring is equipped with sensors that measure heart rate, body temperature, blood oxygen levels, and sleep quality. All data syncs with the Oura mobile app.
Key Features of Oura Ring
- Sleep Monitoring — analysis of sleep phases, fall asleep time, quality and duration
- 24/7 Heart Rate — continuous heart rate monitoring
- Body Temperature — tracking changes with 0.1°C accuracy
- Stress Level — assessment of nervous system state throughout the day
- Activity — step counting, calorie tracking and movement reminders
- Women’s Health — menstrual cycle and ovulation prediction
- Early Illness Detection — Symptom Radar feature warns of deviations before symptoms appear
How to Choose Your Oura Ring Size
The correct ring size is critical for measurement accuracy. Oura offers a free sizing kit that’s delivered before purchasing the ring. The kit contains plastic sizing rings from sizes 6 to 13.
Tip: Wear the sizing ring for at least 24 hours, including overnight. Finger sizes change throughout the day — they’re thinner in the morning and slightly swollen by evening. You can also measure your ring size online using our tool to determine an approximate size in advance.
Which Finger Should You Wear Oura Ring On?
Oura recommends wearing the ring on your index finger for maximum sensor accuracy. Middle and ring fingers also work well. The key is that the ring should fit snugly but not compress your finger.
Oura Ring Specifications
| Parameter | Oura Ring 4 |
|---|---|
| Sizes | 6–13 (US) |
| Material | Titanium / Ceramic |
| Weight | 4–6 g (depending on size) |
| Water Resistance | Up to 100m (10 ATM) |
| Battery | Up to 7 days |
| Charging | ~80 minutes to full charge |
| Connection | Bluetooth 5.4 (LE) |
| Compatibility | iOS 16+ / Android 10+ |
Available Finishes
- Silver — classic silver titanium
- Black — matte black
- Brushed Titanium — titanium with matte texture
- Gold — gold PVD coating
- Rose Gold — rose gold
- Stealth — dark matte
The Oura Ring 4 Ceramic version offers enhanced scratch resistance and premium appearance.
Pricing and Subscription
Oura Ring 4 pricing starts at $299 (titanium) and $449 (ceramic). Access to all app features requires an Oura Membership subscription at $5.99/month. A free trial period is included with ring purchase.
You can buy Oura Ring 4 on the official website ouraring.com.
Who is Oura Ring Right For?
- Those who want to improve sleep quality
- Athletes tracking recovery
- People monitoring heart health
- Women tracking their cycle
- Anyone who prefers a ring over bulky fitness watches
Is Oura Ring 4 Worth Buying?
Oura Ring 4 is the best smart ring on the market in 2026. If accurate sleep and health data is important to you, but you don’t want to wear a watch or bracelet, this is the perfect choice. The only downside is the mandatory subscription after the trial period.
Before purchasing, make sure to determine your size. Use our online ring sizer for quick size determination, then order the free sizing kit from Oura for accurate results.
