Sleep Wearable Form Factor
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Oura Oura Ring 4 Matte black
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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: 5–8 days, depending on ring size and lifestyle.
- Charging time: usually 20–80 minutes, depending on battery charge level.
- Width: 7.90 mm; thickness: 2.88 mm; weight: 3.3–5.2 g, depending on ring size.
- Water resistance rating: up to 100 m/328 ft.
- Sensors measure blood oxygen level, heart rate, heart-rate variability, respiration rate and temperature trends; movement and activity tracking is provided around the clock.
- Available for iOS and Android; Bluetooth Low Energy; integrates with more than 40 apps.
- Hypoallergenic titanium on inner and outer surfaces, with a seamless titanium interior finish.
- Manufacturer warranty indicated; term not specified.
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4659132
- Size: 15 (23,9)
- Brand: OURA
- Width: 7.90 mm.
- Weight: 3.3–5.2 g, depending on ring size.
- Materials: Hypoallergenic titanium on the inner and outer surfaces; seamless titanium interior finish.
- Thickness: 2.88 mm.
- Model Name: Oura Ring 4
- Battery Life: 5–8 days, depending on ring size and lifestyle.
- Product Type: Smart ring
- Charging Time: Usually 20–80 minutes, depending on battery charge level.
- Compatibility: Available for iOS and Android.
- Product family: Oura Ring
- App integrations: Integrates with more than 40 apps.
- Wireless connection: Bluetooth Low Energy.
- Warranty availability: Manufacturer warranty indicated; term not specified.
- Temperature Measurement: A digital sensor measures temperature trends.
- Water Resistance Rating: Up to 100 m/328 ft.
- Movement and activity tracking: An accelerometer tracks movement and activity around the clock.
- Blood oxygen measurement sensors: Red and infrared LEDs measure blood oxygen level.
- Heart rate, heart-rate variability, and respiration tracking: Green and infrared LEDs alternately measure heart rate, heart-rate variability, and respiration rate around the clock.
- First listed by seller: October 20, 2026
Smart ring in matte black, size 15 (23.9). Red and infrared LEDs measure blood oxygen level; green and infrared LEDs alternately measure heart rate, heart-rate variability and respiration rate around the clock. A digital sensor measures temperature trends, and an accelerometer tracks movement and activity around the clock.
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