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The Oura Ring 4 is a cutting-edge smart ring designed for professionals who demand precision and style. It tracks over 30 health metrics including sleep, heart rate, and stress with adaptive Smart Sensing technology. Featuring a durable, water-resistant titanium build and up to 8 days of battery life, it offers seamless 24/7 wearability without distractions. The exclusive sizing kit ensures a perfect fit, while the Oura Membership delivers personalized health insights, making it the ultimate wearable for proactive wellness management.








| Age Range | Adult |
| Color | Black |
| Size | 4 |
| Style | Modern |
| Compatible with | Tablet, Smartphone |
| Display Type | No Display |
| Shape | ring |
| Meter | Sleep Duration, Heart Rate, Blood Oxygen (SpO2), Stress |
| Number of Items | 1 |
| Features | Heart Rate Monitor, Activity Tracker |
| Included Components | Oura Ring 4, Oura Ring 4 Charger, USB-C Cable, Information Booklet, Quick Start Guide |
| Batteries Included? | Yes |
| Brand | OURA |
| Manufacturer | Oura |
| Item model number | JZ90-54144-04 |
| Product Dimensions | 2.2 x 2.2 x 0.7 cm; 120 g |
| ASIN | B0D9WVJXZZ |
A**R
Tracks almost correct - sleep tracking needs improvement though
Tracks almost correct - sleep tracking needs improvement though - I wake up many times and it does not track that so well
D**V
Quality not great
After one month charger/ring stopped working and connecting.
A**R
READ THIS BEFORE BUYING!!!
I bought the ring at such a high price, assuming that it would improve my health, but this device doesn't work without a subscription; that's a pure scam. Without the subscription, there is nothing you can do on the app!!!! AVOID!!
Trustpilot
5 days ago
3 weeks ago