Sleep Wearable Form Factor
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Oura Oura Ring 4 Matte silver
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Last known price: RUB 36,990.00 (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.
- Ring width: 7.90 mm; thickness: 2.88 mm; weight: 3.3–5.2 g, depending on ring size.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4659142
- Size: 14 (23.1)
- Brand: OURA
- Weight: 3.3–5.2 g, depending on ring size.
- Materials: Hypoallergenic titanium on the inner and outer surfaces; seamless titanium inner finish.
- Model Name: Oura Ring 4
- Ring width: 7.90 mm.
- Connectivity: Bluetooth Low Energy; firmware updates automatically through the Oura app.
- Product Type: Smart ring
- Charging Time: Usually 20–80 minutes, depending on battery charge level.
- Ring thickness: 2.88 mm.
- Normal-use wear: Minor scratches from normal use are described as normal.
- Water Resistance: Waterproof up to 100 m / 328 ft.
- App Compatibility: Available for iOS and Android; integrates with more than 40 apps.
- Sensors and tracking: Red and infrared LEDs measure blood oxygen. Green and infrared LEDs alternately measure heart rate, heart-rate variability, and respiration rate around the clock. A digital sensor measures temperature trends; an accelerometer tracks movement and activity around the clock.
- Manufacturer warranty: Yes; the source does not specify the warranty duration or unit.
- Battery Life per Charge: 5–8 days, depending on ring size and lifestyle.
- Supported measurement systems: Supports metric and imperial units.
- First listed by seller: October 20, 2026
The Oura Ring 4 smart ring in matte silver is size 14 (23.1). It has hypoallergenic titanium inner and outer surfaces, with a seamless titanium inner finish. Sensors track blood oxygen, heart rate, heart-rate variability, respiration, temperature trends, movement, and activity; some measurements are taken around the clock.
It connects via Bluetooth Low Energy, and firmware updates automatically through the Oura app. The app is available for iOS and Android and integrates with more than 40 apps. It supports metric and imperial units. Minor scratches from normal use are described as normal. A manufacturer warranty is stated, but its duration or unit is not specified.
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