Sleep Wearable Form Factor
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Oura Oura Ring 4 Matte silver
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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 time: usually 20–80 minutes, depending on battery charge level.
- Red and infrared LEDs measure blood oxygen; alternating green and infrared LEDs measure heart rate, heart rate variability, and breathing rate around the clock. A digital sensor measures temperature trends, and an accelerometer tracks movement and activity around the clock.
- Hypoallergenic titanium on the inner and outer surfaces, with a seamless titanium inner finish.
- Water resistance: up to 100 m / 328 ft.
- Bluetooth Low Energy connectivity; compatible with iOS and Android.
- Width: 7.90 mm; thickness: 2.88 mm; weight: 3.3–5.2 g, depending on ring size.
- Minor scratches from normal use are described as normal.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4655588
- 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; alternating 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 inner finish.
- Thickness: 2.88 mm.
- Model Name: Oura Ring 4
- Connectivity: Bluetooth Low Energy.
- Product Type: Smart ring
- Charging Time: Usually 20–80 minutes, depending on battery charge level.
- Normal-use wear: Minor scratches from normal use are described as normal.
- Water Resistance: Up to 100 m / 328 ft.
- Battery runtime per charge: 5–8 days, depending on ring size and lifestyle.
- Compatible mobile operating systems: iOS and Android.
- First listed by seller: October 20, 2026
Smart ring with hypoallergenic titanium on its inner and outer surfaces and a seamless titanium inner finish. Sensors measure blood oxygen, heart rate, heart rate variability, breathing rate, temperature trends, movement, and activity.
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