| Brand | Oura |
|---|---|
| Color | Black |
| Department | Unisex Adults |
| For Operating Systems | iOS, Android |
| Indoor/Outdoor | Indoor/Outdoor |
| Item Height | Approx. 2.0 mm |
| Item Weight | ~4–6 grams |
| MPN | JZ90-54144-08 |
| Material | JZ90-54144-08 |
| Measurement Provided | Sleep, heart rate, temperature, activity, stress, recover |
| Measurement System | Decimal & Imperial |
| Model | Ring 4 |
| Power Source | Rechargeable battery |
| Sensors | Infrared PPG, accelerometer, gyroscope, temperature sensor |
| Size | 8 |
| Sport/Activity | Running, jogging, general fitness |
| Type | Activity Tracker |
Check the listing for details. Oura Smart Ring 4 Size 8 JZ90-54144-08 Black Excellent Condition. Color: Black, Condition: Excellent - Refurbished. Listed at 212.99 USD. Size 8 fit with optimized comfort and skin sensitivity support. Smart Sensing technology adapts to individual patterns. Syncs with Apple Health, Google Health Connect, Strava, and more. Functionality Grade.
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