Oura Ring 4 Smart Ring
Available Options
A discreet smart ring designed for continuous health monitoring, tracking sleep, activity, stress, heart health, and menstrual cycle. Features a hypoallergenic titanium construction, water resistance up to 328 feet, and 5-8 days of battery life. Integrates with over 40 apps via Bluetooth connectivity and is compatible with iOS and Android devices.
Features
- Tracks sleep, activity, stress, heart health, and menstrual cycle
- Battery life 5-8 days
- Water resistant up to 328 feet
- Hypoallergenic titanium construction
- Integrates with over 40 apps
- Bluetooth connectivity
Product details
General specs
- Brand: Oura
- Model: Ring 4
- Material: Titanium
- Connectivity: Bluetooth
- Charging Method: Magnetic
- OS Compatibility: iOS, Android
Starting from $546.50
Last price update: 1/7/26
Available Options
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Black - Size 10 | re:Store | $645.89 | Available | View |
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Silver - Size 12 | re:Store | $645.89 | Available | View |
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Black - Size 7 | re:Store | $645.89 | Available | View |
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Black - Size 11 | re:Store | $546.50 | Available | View |
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Black - Size 8 | re:Store | $546.50 | Available | View |
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Black - Size 12 | re:Store | $645.89 | Available | View |
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Black - Size 11 | re:Store | $645.89 | Available | View |
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Silver - Size 8 | re:Store | $645.89 | Available | View |
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Silver - Size 11 | re:Store | $645.89 | Available | View |
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Silver - Size 11 | re:Store | $546.50 | Available | View |
Video Reviews
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Oura Ring 4 Black
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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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| Brand | Oura | TOMTOP JMS | RIFESI | Milavan | Samsung | Freeze2Trim |
| Model | Ring 4 | TK20 | SM-Q507NZKAXAR | ours ring sizing kit | ||
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| Price | $546.50 | $38.14 | $139.00 | $58.99 | $399.99 | $39.99 |
| Seller | re:Store | Joom | Amazon | Amazon | Amazon | Amazon |
| Update | January 9, 2026 | January 9, 2026 | December 9, 2025 | December 9, 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 | Aluminum Alloy | 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 | |||