Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Oura Ring 4 Black matte, size 12 Smart Ring
Available offers (16)
Current
Black matte, size 12
re:Store
RUB 36,990.00
Available to order
Price history by offer
Volatility: High
Gold, size 8
0%
RUB 40,040.88
RUB 28,004.54 — RUB 40,040.88
Silver, size 8
-38.5%
RUB 17,228.01
RUB 17,228.01 — RUB 28,004.54
Silver, size 10
-35.2%
RUB 18,134.75
RUB 18,134.75 — RUB 28,004.54
Silver, size 9
-1.1%
RUB 27,682.77
RUB 19,980.32 — RUB 28,004.54
Silver, size 11
0%
RUB 28,004.54
RUB 19,980.32 — RUB 28,004.54
Black, size 11
0%
RUB 28,004.54
RUB 19,980.32 — RUB 28,004.54
Features
- Tracks sleep, activity, stress, heart health, menstrual cycle, and more
- Battery life 5-8 days
- Water resistant up to 328 ft
- Made of hypoallergenic titanium
- Bluetooth Low Energy connectivity
- Integrates with over 40 apps
General specs
- Brand: Oura
- Model: Ring 4
- Seller: re:Store
- ID: 4653508
- Size: 12
- Weight: 0.12, 0.18
- Material: Titanium
- Battery Life: 5–7 d
- Connectivity: Bluetooth
- Charging Time: 0.33, 1.33
- Charging Method: Magnetic
- OS Compatibility: Android, iOS
- Water Resistance: 10ATM
- Bluetooth Version: 5.0
- First listed by seller: January 7, 2026
- Compare the Rings: Oura 4 or Galaxy? Comparison with: Samsung SM-Q509NZDAXAR Titanium Gold Sizing kit for accurate fit
If you are interested in more details, you can find full information on the seller's page.
RUB 36,990.00
Last price update: 10/2/26
Available to order
Price History for seller re:Store
| Date | Price |
|---|---|
| 10/2/26 | RUB 36,990.00 |
| 1/7/26 | RUB 51,990.00 |
Shipping options
Delivery to 
Russia
Russia
Available
For the active professional who wants to optimize health without constant phone checks, the Oura Ring 4 offers seamless wellness tracking. While many smart rings focus on fitness, this device provides a holistic view of your body's signals, helping you manage stress and sleep for better daily performance.
Its sensors detect subtle changes, like a slight dip in heart rate variability before you feel overwhelmed, giving you a heads-up to adjust your routine. The long battery life means you can wear it for a week without worrying about charging, and the hypoallergenic titanium feels comfortable all day. With integration into over 40 apps, it fits smoothly into your existing health ecosystem, offering personalized insights that evolve with your habits.
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| Brand | Oura | SORNBEO | Milavan | SHGMEET | ZBNMY | Aichiken |
| Model | Ring 4 | B0F8HMRF8Z | TK20 | B0FFSYYDXZ | 739562467210 | |
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| Price | RUB 36,990.00 | RUB 8,023.42 | RUB 8,023.42 | RUB 2,887.12 | RUB 3,208.08 | RUB 4,011.31 |
| Seller | re:Store | Retailer | Retailer | Retailer | Retailer | Retailer |
| Update | Oct 26, 2026 | Mar 21, 2026 | May 20, 2026 | Mar 21, 2026 | Mar 21, 2026 | Apr 15, 2026 |
| Size | 12 | 9 | 8 | 9 | 11 | 7 |
| Weight | 0.12, 0.18 | 2 | 0.240625 | 3.5 | ||
| Battery Life | 5–7 d | 3–5 d | 3–5 d | 3–5 d | ||
| Charging Time | 0.33, 1.33 | 1, 2 | 1, 2 | |||
| OS Compatibility | Android, iOS | Android 5.0+, iOS | Android, iOS | Android 5.0+, iOS 10+ | Android, iOS | Android, iOS |
| Water Resistance | 10ATM | IP68 | 5ATM | IP68 | IP68 | |
| Bluetooth Version | 5.0 | 5.0 | 5.1 | |||
Oura Ring 4 Black
RUB 36,990.00
When this device makes sense
Product confidence
Reviews
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