Oura Ring 4

💍 Oura Ring 4 — High-Precision Health Tracking Ring

Oura Ring 4 is
"Sensationless wearing, continuous monitoring, advanced algorithm optimization"
This is a high-precision health tracking ring developed with the concept of

Compared to conventional smartwatch-type wearables,
It is lighter, less noticeable, and lasts longer .

In particular, the accuracy of sleep analysis is among the best in the industry .
Plus, it has enhanced tracking of emotions, stress, and resilience .

1. Core hardware upgrade

2. Main functions and features of Oura Ring 4

💤 1. Top-class sleep tracking system

• It uses the "Sleep Stages+" model, which uses multiple physiological signals such as heart rate variability (HRV), body temperature curves, and micromotion detection.
• Highly accurate discrimination between light sleep, deep sleep and REM (rapid eye movement) sleep stages.
• New features include a morning sleep summary audio report and AI-based sleep improvement advice .
• The accuracy of sleep analysis is the highest among commercially available wearables (close to laboratory level).

❤️ 2. Continuous measurement of heart rate and HRV (heart rate variability)

• Automatically measures resting and instantaneous heart rate and HRV continuously for 24 hours.
• Displays your heart rate zone in real time during exercise (fitness mode compatible).
• Comprehensive calculations of recovery status, stress index, sleep score, etc. are based on HRV data.

🌡️ 3. Temperature and cycle tracking

• Equipped with multiple high-precision temperature sensors, it continuously detects minute fluctuations in finger surface temperature.
• Predicts menstrual cycle, ovulation date, and signs of fever risk.
• Visualize subtle changes in immune response and recovery ability.

🫁 4. Stress and Emotional Balance Detection (New Feature)

• Newly introduced " Daytime Stress Lens " algorithm.
  Highly accurate analysis of psychological stress state using HRV + galvanic skin response (GSR).
• " Emotional Readiness Score "
  Visualize fatigue and anxiety levels and provide support for self-regulation.

🏃 5. Activity/Sports Detection

• Automatically recognizes over 20 types of exercise (walking, running, cycling, strength training, yoga, swimming, etc.).
• Real-time analysis of exercise intensity, calories burned, steps taken, and activity level.
• Data can be linked with Apple Health, Google Fit, Strava, etc.

🪷 6. Resilience/Readiness Score

• It integrates multiple factors such as sleep quality, HRV, activity, and body temperature fluctuations.
  A "readiness score (0–100)" is calculated every morning.
• It suggests whether you should exercise or rest depending on your physical condition.

🧘 7. Breathing and Mindfulness Measurement

• The new feature " Breath Focus " visualizes breathing training.
• It uses heart rate and skin signals to quantify the relaxation effect, making it ideal for meditation support.

🔋 8. Long-lasting battery life & comfortable fit

• It can run for 7 to 9 days on a single charge.
• The ultra-lightweight, screenless design means you barely even feel like you're wearing it.
• There is no need to remove them when sleeping, and there is no blue light interference.

3. New features of the dedicated app

• New dashboard configuration : Manage sleep, readiness, and activity on one screen.
• AI Health Coach (Beta version) : Proposes lifestyle improvement strategies based on data.
• Long-term trend analysis (Trend View) : Displays changes in your physical condition over a period of several weeks to several months.
• Compatible with both iOS and Android, data is securely managed with end-to-end encryption .

4. Summary of unique advantages

5. Recommended user demographic

• 🧘♀️ Anyone interested in sleep, recovery, and health data
• 🧑💻 Business people who are prone to stress and overwork
• 🏃 Health-conscious fitness enthusiasts
• 💍 For those looking for a lightweight wearable device and those who don't like watches
• 💤 People who want to improve their daily routine and boost their energy levels

✅ Summary

Oura Ring 4 = "Simple design x Lab-level accuracy x AI health insights"
It's not just a gadget,
This ring helps you "understand" the rhythms of your body and mind.