Oura Ring 4
What's Included
- Oura Ring 4
- Size-specific charger
Tech Specifications
Sensors
- Red and infrared LEDs measure blood oxygen levels
- Green and infrared LEDs alternate to measure heart rate and heart rate variability 24/7 and respiration rate
- Digital sensor measures temperature trends
- Accelerometer tracks movement and activity 24/7
Compatibility
- Oura App is available in English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish
- Supports metric and imperial units of measurement
- Integrates with 40+ apps
- Available on iOS and Android
Weight and Dimensions
- Width: 7.90mm
- Thickness: 2.88mm (similar to a wedding band)
- Weight: 3.3 to 5.2 grams (depending on Oura Ring size)
Battery Life
- Up to 8 days of battery**
- Typically charges in 20-80 minutes, depending on battery level
Quality Materials
- Non-allergenic titanium on inner & outer surfaces
- Seamless titanium interior
- Water resistant up to 100m/328 ft
- Minor scratches from regular wear are normal
Connectivity
- Bluetooth Low Energy
- Automatic firmware updates via Oura App
- EMF-safe
- Supports airplane mode
- FCC-certified
