| Number of Items in Set | 1 |
|---|---|
| Power Source | Batteries |
| Size | 8 |
| Indoor/Outdoor | Indoor/Outdoor |
| Measurement System | Decimal & Imperial |
| For Operating Systems | Android, iOS |
| Department | Unisex Adults |
| Measurement Provided | Heart Rate, Distance |
| Battery Life | Up to 7 Days |
| Unit Type | Unit |
| Language | English |
| Display Size | 2.4X External Display |
| Manufacturer Warranty | 1 Year |
| Item Height | 2.000 |
| Body Area | Hand |
| Features | Sleep Tracker |
| Sensors | Accelerometer |
| Sport/Activity | Running & Jogging |
| Display Resolution | 240 x 240 |
| Color | Silver |
| Material | Titanium |
| Brand | Oura |
| Type | Activity Tracker |
| Model | OA11 |
| Item Weight | 6.7 oz |
Check the listing for details. Oura Ring 4 Size 8 Silver Smart Fitness Tracker. Color: Silver, Condition: New. Listed at 250.00 USD. Brand new in sealed box. The Oura Ring 4 Size 8 Silver Smart Fitness Tracker is a sleek and sophisticated activity tracker designed for both indoors and outdoors. With a measurement system that utilizes both decimal and imperial units, this unisex device tracks your heart rate and distance with precision. It boasts a long battery life of up to 7 days and features a sleep tracker for added insight into your rest.