Digital Health

Oura Ring 4

Health & Wellness

Provides valuable insights into your holistic health – sleep, activity, stress, heart health, cycle and more

A wearable health monitoring device designed as a ring form factor that continuously tracks physiological signals and activity data. It uses a sensor suite—including PPG, temperature sensors, and accelerometers—to measure metrics such as heart rate, heart rate variability, blood oxygen levels, body temperature trends, respiration, sleep patterns, and physical activity.

Tech Brief
- Oura Ring 4 incorporates an advanced 18-path multi-wavelength photoplethysmography sensor system using red, green, and infrared LEDs to measure heart rate, heart rate variability, respiratory rate, and blood oxygen levels continuously, day and night.
  
  It includes a digital temperature sensor for tracking skin temperature variations, useful for early illness detection, menstrual cycle tracking, and recovery insights.
  
  A 3D accelerometer monitors movement and activity 24/7, capturing steps, exercise intensity, and restlessness during sleep.
  
  The breakthrough "Smart Sensing" technology dynamically adjusts sensor configurations based on context and conditions, improving accuracy and battery efficiency.
  
  The ring automatically detects and tracks 40 different exercise types, including detailed heart rate zone analysis for supported activities like running and cycling.