Oura Ring 4 | Smart Ring | Size First with Oura Ring 4 Sizing Kit | Sleep Tracking Wearable - Heart Rate - Fitness Tracker - Up to 8 Days Battery Life
| Warranty Type | Standard/Full |
| Display Type | No Display |
| Battery Cell Type | Lithium Polymer |
| Color | Black |
| Band Color | black |
| Style Name | Modern |
| Item Shape | Ring |
| Compatible Phone Models | Smartphone |
| Compatible Devices | Smartphone |
| Supported Application | Fitness Tracker |
| Controller Type | Ring |
| Metrics Measured | [MULTI] |
| Case Material Type | Titanium |
| Water Resistance Level | Water Resistant |
| Operating System | Proprietary Operating System |
| Band Material Type | Titanium |
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