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Modelo
Oura Ring 4
Ceramic
Ceramic
Oura Ring 4
Price
$399
$299
Design
High-performance zirconia ceramic exterior & titanium interior
Fully titanium exterior & interior
Battery
5 - 8 days*
5 - 8 days*
Sizing
Sizes 4-15
Sizes 4-15
What's included
- Oura Ring 4
- Charger for the chosen size
- USB-C cable
Technical specifications
Sensors
- The red and infrared sensors measure blood oxygen levels.
- The green and infrared LED sensors alternate to continuously measure heart rate and heart rate variability, as well as respiratory rate while you sleep.
- The digital sensor measures your body temperature trends.
- The accelerometer tracks movement and activity 24/7.
Compatibility
- The Oura app is available in Spanish, English, Finnish, Japanese, German, French, Italian, Norwegian, Swedish, Danish, Dutch, and Czech.
- It can be configured with either the metric or imperial system.
- It integrates with over 40 apps.
- It is available for iOS and Android.
Weight and dimensions
- Width: 7.90 mm
- Thickness: 2.88 mm (similar to a wedding band)
- Weight: between 3.3 and 5.2 grams (depending on the Oura Ring size)
Autonomy
- Up to 8 days of battery life.**
- Typically takes between 20 and 80 minutes to charge (depending on the initial battery level).
Materials and resistance
- Hypoallergenic titanium inner and outer surface.
- One-piece titanium interior.
- Water resistant to 100 meters.
- Minor scratches may appear with daily use.
Connectivity
- It works with Bluetooth Low Energy (Bluetooth Smart®).
- Automatic firmware updates via the Oura app.
- It does not generate harmful electromagnetic fields.
- It has an airplane mode.
- FCC certified.