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 operating time: 5–8 days, depending on ring size and lifestyle.
- Charging time: Usually 20–80 minutes, depending on battery charge level.
- Sensors measure blood oxygen, heart rate, heart rate variability, breathing rate, temperature trends, movement, and activity; heart rate, heart rate variability, breathing rate, movement, and activity are tracked around the clock.
- Water resistance: up to 100 m/328 ft.
- Hypoallergenic titanium on inner and outer surfaces; seamless titanium interior.
- Width: 7.90 mm; thickness: 2.88 mm.
- Weight: 3.3–5.2 g, depending on Oura ring size.
- Bluetooth Low Energy connectivity; Oura app available for iOS and Android.
- Firmware updates automatically through the Oura app; airplane mode is supported.
- Minor scratches from normal use are expected.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4653544
- Size: Size 10 (19.8)
- Brand: OURA
- Width: 7.90 mm.
- Weight: 3.3–5.2 g, depending on Oura ring size.
- Sensors: Red and infrared LEDs measure blood oxygen; green and infrared LEDs measure heart rate, heart rate variability, and breathing rate around the clock; a digital sensor measures temperature trends; an accelerometer tracks movement and activity around the clock.
- Material: Hypoallergenic titanium on the inner and outer surfaces, with a seamless titanium interior.
- Thickness: 2.88 mm.
- Model Name: Oura Ring 4
- Connectivity: Bluetooth Low Energy.
- Product Type: Smart ring
- Airplane mode: Supported.
- Charging Time: Usually 20–80 minutes, depending on battery charge level.
- Normal-use wear: Minor scratches from normal use are expected.
- Firmware updates: Firmware updates automatically through the Oura app.
- Water Resistance: Up to 100 m/328 ft.
- Battery operating time: 5–8 days, depending on ring size and lifestyle.
- Mobile app availability: Oura app is available for iOS and Android.
- First listed by seller: October 20, 2026
The Oura Ring 4 smart ring in Black, Size 10 (19.8), has hypoallergenic titanium inner and outer surfaces and a seamless titanium interior. Its sensors measure blood oxygen, heart rate, heart rate variability, breathing rate and temperature trends, while an accelerometer tracks movement and activity around the clock. Battery operating time is 5–8 days depending on ring size and lifestyle; charging usually takes 20–80 minutes depending on battery charge level.
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