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 Matte 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 32,990.00 (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 runtime per charge: 5–8 days, depending on ring size and lifestyle.
- Charging usually takes 20–80 minutes, depending on battery charge level.
- Waterproof up to 100 m / 328 ft.
- Hypoallergenic titanium on inner and outer surfaces, with a seamless titanium interior finish.
- Measures blood oxygen using red and infrared LEDs; green and infrared LEDs alternately measure heart rate, heart rate variability, and breathing rate around the clock.
- Tracks temperature trends with a digital sensor and movement and activity around the clock with an accelerometer.
- Bluetooth Low Energy; compatible with iOS and Android; integrates with more than 40 apps.
- Supports metric and imperial units and airplane mode; automatic firmware updates through the Oura app.
- FCC certified; described as safe for electromagnetic fields.
- Works with Oura Membership to provide personalized recommendations based on body data.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4659144
- Size: 15 (23.9)
- Brand: OURA
- Width: 7.90 mm
- Weight: 3.3–5.2 g, depending on ring size
- Material: Hypoallergenic titanium on the inner and outer surfaces; seamless titanium interior finish
- Thickness: 2.88 mm
- Model Name: Oura Ring 4
- Product Type: Smart ring
- Airplane mode: Supported
- Charging Time: Usually 20–80 minutes, depending on battery charge level
- Oura Membership: Works with the Oura Ring to provide personalized recommendations based on body data
- App integrations: Integrates with more than 40 apps
- Firmware updates: Automatic firmware updates through the Oura app
- Water Resistance: Waterproof up to 100 m / 328 ft
- FCC certification: FCC certified
- Temperature tracking: A digital sensor measures temperature trends
- Wireless Connectivity: Bluetooth Low Energy
- Blood Oxygen Measurement: Red and infrared LEDs measure blood oxygen levels
- Battery runtime per charge: 5–8 days, depending on ring size and lifestyle
- Compatible mobile platforms: iOS and Android
- Measurement units supported: Metric and imperial
- Electromagnetic field safety: Described as safe for electromagnetic fields
- Movement and activity tracking: An accelerometer tracks movement and activity around the clock
- Heart rate, heart rate variability, and breathing rate measurement: Green and infrared LEDs alternately measure heart rate, heart rate variability, and breathing rate around the clock
- First listed by seller: October 20, 2026
Smart ring with red and infrared LEDs for blood oxygen measurement, and alternating green and infrared LEDs for around-the-clock measurement of heart rate, heart rate variability, and breathing rate. Battery runtime is 5–8 days per charge, 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.