Sleep Wearable Form Factor
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Oura Oura Ring 4 black
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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 per charge: 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 on inner and outer surfaces, with a seamless titanium inner finish.
- Width: 7.90 mm; thickness: 2.88 mm; weight: 3.3–5.2 g, depending on ring size.
- Red and infrared LEDs measure blood oxygen level; green and infrared LEDs alternate to measure heart rate, heart rate variability, and breathing rate around the clock.
- Digital sensor measures temperature trends; accelerometer tracks movement and activity around the clock.
- Available for iOS and Android; integrates with more than 40 apps.
- Bluetooth Low Energy connectivity; automatic firmware updates through the Oura app; supports airplane mode.
- FCC certified. Manufacturer warranty is indicated as present; term and coverage details are not specified here.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4659148
- Size: 14 (23.1)
- 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 inner finish.
- Thickness: 2.88 mm.
- Model Name: Oura Ring 4
- Connectivity: Bluetooth Low Energy.
- Product Type: smart ring
- Airplane mode: Supports airplane mode.
- Charging Time: Usually 20–80 minutes, depending on battery charge level.
- 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.
- FCC certification: FCC certified.
- Device Compatibility: Available for iOS and Android.
- Manufacturer warranty: Indicated as present; term and coverage details are not specified here.
- Battery Life per Charge: 5–8 days, depending on ring size and lifestyle.
- Temperature Measurement: A digital sensor measures temperature trends.
- Blood Oxygen Measurement: Red and infrared LEDs measure blood oxygen level.
- Movement and activity tracking: An accelerometer tracks movement and activity around the clock.
- Heart and breathing measurements: Green and infrared LEDs alternate to measure heart rate, heart rate variability, and breathing rate around the clock.
- First listed by seller: October 20, 2026
Smart ring in size 14 (23.1), black, with hypoallergenic titanium inner and outer surfaces. It measures blood oxygen, heart rate, heart rate variability, breathing rate, temperature trends, and movement and activity. Battery life per charge is 5–8 days, depending on ring size and lifestyle.
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