Oura Ring Gen 4 – Health Tracking Ring, Sleep, HRV, Activity, Readiness Score

Oura Ring Gen 4 – HRV, SpO2, Sleep Analysis, AI Readiness Score, Titanium Ring

The Oura Ring Gen 4 is the world’s most accurate and popular wearable health monitoring ring, trusted by professional athletes, health researchers, and wellness enthusiasts for its clinical-grade accuracy in a discreet titanium ring form factor. No screen, no notifications — just comprehensive health data delivered through the Oura app each morning to guide your daily decisions about sleep, activity, and recovery.

• Clinical-Grade Accuracy: Oura’s sensors are validated in peer-reviewed studies and trusted by the NBA, NHL, and Olympic teams for athlete health monitoring — most accurate consumer wearable available
• Advanced Sleep Analysis: Tracks all sleep stages (REM, light, deep), blood oxygen, body temperature variation, and HRV during sleep for the most comprehensive sleep health data available
• Heart Rate Variability (HRV): Continuous HRV monitoring during sleep identifies recovery quality and physiological stress — key metric for athletic performance and overall health optimization
• AI Daily Readiness Score: Oura’s AI synthesizes sleep quality, HRV, activity, and body temperature into a single daily Readiness Score with personalized recommendations for training and rest
• SpO2 + Body Temperature: Blood oxygen monitoring and continuous body temperature tracking; temperature spikes often indicate early illness — Oura alerts 1-3 days before symptoms appear
• Cycle Tracking + Pregnancy Mode: AI-powered menstrual cycle prediction and fertility window tracking; Pregnancy Mode adapts health monitoring for prenatal health optimization
• 7-Day Battery in Titanium Ring: 7-day battery life in a lightweight 4-6 gram aerospace-grade titanium ring — indistinguishable from a regular ring in daily wear