Oura Ring 4 Smart Ring: Tracks sleep, activity, stress, heart health, menstrual cycle, and more
For the active professional who wants to optimize health without constant device charging, the Oura Ring 4 offers seamless wellness tracking. It’s perfect for monitoring sleep quality and recovery after a tough workout or a stressful day.
This smart ring goes beyond basic fitness tracking to provide personalized insights for long-term health. The sensors detect subtle changes, like a slight dip in heart rate variability before you feel stressed, helping you adjust your routine proactively. With battery life lasting 5-8 days, you can wear it continuously without interruption, and it integrates with over 40 apps for a holistic view of your well-being.
Made from hypoallergenic titanium and waterproof up to 100 meters, it’s durable enough for daily wear. The Oura Membership program turns your data into actionable advice, supporting goals like better sleep or reduced stress. Experience a smarter way to care for your health with this discreet, powerful tool.
Features
- Battery life: 5-8 days
- Waterproof up to 328 feet
- Hypoallergenic titanium construction
- Integrates with over 40 apps
- Supports metric and imperial units
- Tracks sleep, activity, stress, heart health, menstrual cycle, and more
General specs
- Brand: Oura
- Model: Ring 4
- Seller: re:Store
- ID: 4653538
- Size: 8
- Weight: 0.116, 0.183
- Material: Titanium
- Battery Life: 5–8 d
- Connectivity: Bluetooth
- Charging Time: 0.33, 1.33
- Charging Method: Magnetic
- OS Compatibility: iOS, Android
- Water Resistance: 100 m
- Bluetooth Version: Low Energy
- First listed by seller: 1/7/26
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Video Reviews
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Oura Ring 4 Black
|
Fitness Ring with Heart Rate, Sleep, Step & SpO2 Monitor Silver
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Milavan TK20 Rose Gold
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Samsung SM-Q507NZKAXAR Black Fitness and sleep tracker
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Freeze2Trim ours ring sizing kit Black Continuous heart rate monitoring
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UniJethro SR11M Heart rate monitoring
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| Brand | Oura | RIFESI | Milavan | Samsung | Freeze2Trim | UniJethro |
| Model | Ring 4 | TK20 | SM-Q507NZKAXAR | ours ring sizing kit | SR11M | |
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| Price | $546.50 | $139.00 | $58.99 | $399.99 | $39.99 | $39.99 |
| Seller | re:Store | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | January 9, 2026 | December 9, 2025 | December 9, 2025 | December 6, 2025 | December 6, 2025 | December 6, 2025 |
| Size | 8 | 8 | 8 | 7 | 8 | |
| Weight | 0.116, 0.183 | 0.240625 | 2.55 | 5.39 | ||
| Material | Titanium | Titanium Alloy | Titanium | |||
| Battery Life | 5–8 d | 7 d | 3–5 d | 7 d | ||
| OS Compatibility | iOS, Android | iOS, Android | Android, iOS | Android | ||
| Water Resistance | 100 m | 5ATM | IP68 | |||
