Oura Ring 4 - Silver (Size 8) Brand New
5.0 (127 items)
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Product details
| Management number | 27544530 | Release Date | 2025/12/17 | List Price | $156.00 | Model Number | 27544530 | ||
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| Category | |||||||||
Oura Ring 4
Size-specific charger
USB-C cable
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
5-8 days of battery life*
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 ar
| Category | Electronics > Wearables > Fitness Trackers |
|---|---|
| Size | N/A |
| Brand | Oura |
| Condition | New |
Fitness Trackers
Surge Protectors
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