Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Oura Oura Ring 4 Silver
No current offers
Saved product information may be incomplete. Check the selected variant and package contents; availability elsewhere is not verified.
Last known price: RUB 30,990.00 (RUB)
Price source: re:Store
Price record dated 10/20/26
Saved price in the source currency; not a current offer. The date refers to the price record, not a stock check.
Features
- Battery life: 5–8 days, depending on ring size and lifestyle.
- Charging time: usually 20–80 minutes, depending on battery charge level.
- Waterproof up to 100 m/328 ft.
- Hypoallergenic titanium inner and outer surfaces with a seamless titanium inner finish.
- Sensors measure blood oxygen, heart rate, heart rate variability, respiratory rate, temperature trends, movement, and activity; several measurements are taken around the clock.
- Bluetooth Low Energy connectivity; the Oura app is available for iOS and Android.
- Integrates with more than 40 apps and supports metric and imperial units.
- The app supports English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish; firmware updates automatically through the Oura app.
- Supports airplane mode; FCC certified.
- Minor scratches from normal use are described as normal. Manufacturer warranty is indicated; term not specified.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4655586
- Size: 05 (15.7)
- Brand: OURA
- Width: 7.90 mm.
- Weight: 3.3–5.2 g, depending on ring size.
- Sensors: Red and infrared LEDs measure blood oxygen; green and infrared LEDs alternately measure heart rate, heart rate variability, and respiratory rate around the clock; a digital sensor measures temperature trends; an accelerometer tracks movement and activity around the clock.
- Materials: Hypoallergenic titanium on the inner and outer surfaces; seamless titanium inner finish.
- Thickness: 2.88 mm.
- Model Name: Oura Ring 4
- Battery Life: 5–8 days, depending on ring size and lifestyle.
- Connectivity: Bluetooth Low Energy.
- Product Type: Smart ring
- Airplane mode: Supports airplane mode.
- APP Languages: English, Finnish, Japanese, German, French, Spanish, Italian, Norwegian, Swedish, Czech, Dutch, and Danish.
- Certification: FCC certified.
- Charging Time: Usually 20–80 minutes, depending on the battery charge level.
- Normal-use wear: Minor scratches from normal use are described as normal.
- App integrations: Integrates with more than 40 apps.
- Firmware updates: Firmware updates automatically through the Oura app.
- Water Resistance: Waterproof up to 100 m/328 ft.
- Device Compatibility: The Oura app is available for iOS and Android.
- App measurement units: Supports metric and imperial units.
- Manufacturer warranty: Manufacturer warranty is indicated; the term is not specified.
- Electromagnetic field safety: Described as safe for electromagnetic fields.
- First listed by seller: October 20, 2026
Smart ring in silver, size 05 (15.7), with hypoallergenic titanium on its inner and outer surfaces and a seamless titanium inner finish. It is described as waterproof up to 100 m/328 ft.
Battery life is 5–8 days depending on ring size and lifestyle; charging usually takes 20–80 minutes depending on battery charge level.
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.