⌚ Size smart, live smarter — your wellness journey starts with the perfect fit!
The Oura Ring 4 Sizing Kit lets you find your precise ring size before purchasing the advanced Oura Ring 4, a sleek titanium smart ring that tracks over 30 biometrics including sleep, heart rate, and stress. With up to 8 days of battery life and water resistance, it’s designed for continuous 24/7 wear. Plus, enjoy a free first month of Oura Membership for enhanced health insights.
| Age Range | Adult |
| Color | Black |
| Size | 4 |
| Style | Modern |
| Compatible with | Tablet, Smartphone |
| Display Type | No Display |
| Shape | ring |
| Meter | Sleep Duration, Heart Rate, Blood Oxygen (SpO2), Stress |
| Number of Items | 1 |
| Features | Heart Rate Monitor, Activity Tracker |
| Included Components | Oura Ring 4, Oura Ring 4 Charger, USB-C Cable, Information Booklet, Quick Start Guide |
| Batteries Included? | Yes |
| Brand | OURA |
| Manufacturer | Oura |
| Item model number | JZ90-54144-04 |
| Product Dimensions | 2.2 x 2.2 x 0.7 cm; 120 g |
| ASIN | B0D9WVJXZZ |
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