Oura Ring Gen 3

Design and fit

Lightweight Titanium Material - High strength and ultra-lightweight (only 4-6g) titanium body.

Minimalist and sophisticated design - with a simple appearance without a display, it looks as natural as an ordinary ring.

Water resistant to 100m - suitable for everyday use including washing hands, showering, swimming, and sauna.

Medical-grade epoxy resin liner - gentle on the skin and non-irritating even when worn for extended periods.

Hard-wearing coated finish —remains shiny and smooth even after long-term use.

Available in a wide range of colors and sizes —silver, black, gold, rose gold, and stealth—from sizes 6 to 13.

Optimized thickness design - slightly thicker on top and thinner on the sides for a comfortable fit.

Health sensors and measurement accuracy

High-precision sleep tracking —Automatically distinguishes between light, deep and REM sleep with medical-grade accuracy.

24-hour heart rate monitoring —Infrared sensor measures your heart rate at rest, during activity, and while sleeping.

Body temperature change tracking - Records minute changes in body temperature each night, helping you understand your health and menstrual cycle.

Blood oxygen saturation (SpO₂) measurement —Oxygen levels are monitored using an infrared light sensor.

Respiration rate monitoring - Analyze your breathing patterns per minute to understand your health.

High-precision activity detection —3D accelerometer and gyroscope accurately measure your steps and movements.

HRV (heart rate variability) analysis - Used to understand stress levels and analyze recovery levels.

Battery and Performance

Long-lasting battery life —up to 5-7 days of use on a single charge.

Fast charging —reach 50% charge in about 20 minutes and a full charge in about 80 minutes.

Wireless magnetic charger - a charging stand that can be easily set up using magnetic force.

Auto power saving mode —Automatically saves battery when not being worn.

Firmware update support - Regular feature updates (e.g. stress assessment function)

Durable design —resistant to sweat, dust, impact, and water, making it ideal for sports and everyday use.

Smart features and app integration

Three Health Scores : Sleep Score
・Readiness Score
・Activity Score
These are all combined to visualize your physical condition.

Female cycle tracking - Predict ovulation and menstrual cycle based on body temperature fluctuations.

Oura app provides easy-to-understand data visualization —intuitive graphs and trends.

Personalized advice feature : Get personalized suggestions for improving your sleep quality and recovery.

Integration with Apple Health/Google Fit - Sync data with other health apps.

Strong privacy protection - location and voice data is not collected and is encrypted on the device.

Airplane mode compatible - Turn off Bluetooth signals for peace of mind when wearing them while sleeping.

Oura Membership (premium feature) — Provides stress indicators, long-term trend analysis, detailed reports, and more.