Oura Ring 4 Smart Ring with Health, Sleep & Fitness - 8-Day Battery - Brushed Silver - Size 15

The Oura Ring 4 in Brushed Silver, Size 15 is a discreet, all-titanium smart ring with Smart Sensing that adapts to your finger — tracking sleep, HRV, blood oxygen, temperature, and stress. Up to 8 days of battery, no screens, no buzz. Auto-detects 30+ activities and gives a daily Readiness ScorePairs with the Oura app on iOS or Android. First month of membership included; $7.99/mo afterThis description was generated by AI and reviewed for accuracy. | Oura Ring 4 Smart Ring with Health, Sleep & Fitness - 8-Day Battery - Brushed Silver - Size 15