Oura Ring 5 is mainly a health-tracking ring that covers sleep, activity, stress, heart health, and recovery, with 50+ health metrics overall. It also adds newer software-focused features like Health Radar, live activity tracking, and GLP-1 insights.

Main functions

  • Sleep tracking, including sleep score, sleep stages, and bedtime guidance.
  • 24/7 heart tracking, including heart rate, heart rate variability, and respiration rate.
  • Blood oxygen sensing during sleep to help spot breathing disturbances.
  • Temperature trend tracking and broader recovery insights.
  • Activity tracking with automatic activity detection and personalized activity goals.
  • Daytime stress and resilience tracking.
  • Heart health insights, including Cardiovascular Age and Cardio Capacity (VO2 Max).
  • Women’s health features such as Cycle Insights and Pregnancy Insights.

Newer additions

  • Health Radar, which adds proactive signals for blood pressure patterns and nighttime breathing.
  • Live activity tracking, so you can start a workout in the app and see metrics in real time.
  • GLP-1 insights, which organize medication, side effects, weight, and related trends in one view.

Hardware side

  • It uses red/infrared LEDs for blood oxygen sensing and green/infrared LEDs for heart rate and HRV.
  • A digital temperature sensor tracks body temperature trends, and an accelerometer tracks movement and activity.
  • Oura says the Ring 5 is smaller, with up to 9 days of battery life and a titanium design.

If you want, I can also turn this into a simple “what it does / what it doesn’t do” table.