Sleep Wearable Form Factor
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Oura Oura Ring 4 Size 08 (18.2), Matte Black Smart Ring, Matte Black, Size 08 (18.2)
Available offers (21)
Current
Size 08 (18.2), Matte Black
re:Store
RUB 30,990.00
Available to order
Features
- Battery life: 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 the inner and outer surfaces, with a seamless titanium inner finish
- Tracks blood oxygen, heart rate, heart rate variability, respiratory rate, temperature trends, movement and activity; measurement details and around-the-clock tracking vary by sensor as specified
- Width: 7.90 mm; thickness: 2.88 mm
- Weight: 3.3–5.2 g, depending on Oura ring size
- Bluetooth Low Energy; Oura app available for iOS and Android
- Integrates with more than 40 apps; automatic firmware updates through the Oura app; supports flight mode; FCC certified
General specs
- Brand: Oura
- Model: Oura Ring 4
- Seller: re:Store
- ID: 4653504
- Size: 08 (18.2)
- Brand: OURA
- Width: 7.90 mm
- Weight: 3.3–5.2 g, depending on Oura ring size
- Material: Hypoallergenic titanium on the inner and outer surfaces; seamless titanium inner finish
- Thickness: 2.88 mm
- Model Name: Oura Ring 4
- Flight Mode: Supports flight mode
- Battery Life: 5–8 days, depending on ring size and lifestyle
- Connectivity: Bluetooth Low Energy
- Product Type: Smart ring
- Certification: FCC certified
- Charging Time: Usually 20–80 minutes, depending on battery charge level
- Compatibility: Oura app available for iOS and Android
- App integrations: Integrates with more than 40 apps
- Firmware updates: Automatic firmware updates through the Oura app
- Water Resistance: Waterproof up to 100 m / 328 ft
- Sensors and tracking: Red and infrared LEDs measure blood oxygen; green and infrared LEDs alternate to measure heart rate, heart rate variability and respiratory rate around the clock; a digital sensor measures temperature trends; an accelerometer tracks movement and activity around the clock
- First listed by seller: October 20, 2026
If you are interested in more details, you can find full information on the seller's page.
RUB 30,990.00
Last price update: 10/20/26
Available to order
Shipping options
Delivery to 
Russia
Russia
Available
Smart ring with hypoallergenic titanium on its inner and outer surfaces and a seamless titanium inner finish. Red and infrared LEDs measure blood oxygen; green and infrared LEDs alternate to measure heart rate, heart rate variability and respiratory rate around the clock. A digital sensor measures temperature trends, and an accelerometer tracks movement and activity around the clock.
Battery life is 5–8 days depending on ring size and lifestyle. Charging usually takes 20–80 minutes depending on battery charge level. Waterproof up to 100 m / 328 ft.
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| Brand | Oura | Oura | Oura | Oura | Oura | Oura |
| Model | Oura Ring 4 | OURA 5 | Ring 5 | Ring 5 | Ring 5 | Ring 5 |
| Color |
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|
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| Price | RUB 30,990.00 | RUB 65,990.00 | RUB 75,990.00 | RUB 75,990.00 | RUB 65,990.00 | RUB 65,990.00 |
| Seller | re:Store | re:Store | re:Store | re:Store | re:Store | re:Store |
| Update | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 | Oct 26, 2026 |
| Size | 08 (18.2) | 07 (17,3) | 11 (20,6) | 09 (19) | 08 (18.2) | 09 (19) |
| Model Name | Oura Ring 4 | OURA 5 | Ring 5 | Ring 5 | Ring 5 | Ring 5 |
| Product Type | Smart ring | Smart ring | Smart ring | Smart ring | smart ring | Smart ring |
| Certification | FCC certified | FCC certified. | FCC certified. | |||
| Charging Time | Usually 20–80 minutes, depending on battery charge level | About 80 minutes, depending on the battery charge level. | About 80 minutes, depending on battery charge level. | About 80 minutes, depending on battery charge level. | About 80 minutes, depending on battery charge level. | About 80 minutes, depending on the battery charge level. |
| Compatibility | Oura app available for iOS and Android | Available for iOS and Android. | Available for iOS and Android. | Available for iOS and Android. | ||
| App integrations | Integrates with more than 40 apps | Integrates with more than 100 apps. | Integrates with more than 100 apps. | Integrates with more than 100 apps. | Integrates with more than 100 apps. | |
| Firmware updates | Automatic firmware updates through the Oura app | Firmware updates automatically through the Oura app. | Automatic firmware updates through the Oura app. | Automatic firmware updates through the Oura app. | Firmware updates automatically through the Oura app. | Firmware updates automatically through the Oura app. |
| Water Resistance | Waterproof up to 100 m / 328 ft | Waterproof up to 100 m/328 ft; IP68 water and dust protection. | Up to 100 m/328 ft. | Up to 100 m/328 ft. | Water-resistant up to 100 m/328 ft; IP68-rated for water and dust. | |
| Airplane mode | Supports airplane mode. | Supports airplane mode. | Supports airplane mode. | Supports airplane mode. | ||
| Manufacturer warranty | Available. | Manufacturer warranty is indicated; no term is stated. | Indicated as available. | Manufacturer warranty is indicated as available. | ||
| Ingress Protection Rating | IP68 protection against water and dust. | IP68 for water and dust. | IP68 for water and dust. | |||
| Wireless Connectivity | Bluetooth Low Energy. | Bluetooth Low Energy. | Bluetooth Low Energy. | Bluetooth Low Energy. | ||
| Battery runtime per charge | Up to 6–9 days, depending on ring size and usage intensity. | Up to 6–9 days per charge, depending on ring size and intensity of use. | Up to 6–9 days of battery life per charge, depending on ring size and intensity of use. | |||
Oura Oura Ring 4 Matte black
RUB 30,990.00
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