| Special Feature | Heart Rate Monitor, Activity Tracker |
| Connectivity Technology | Bluetooth, USB |
| Wireless Communication Standard | Bluetooth |
| Battery Cell Composition | Lithium Polymer |
| GPS | No GPS |
| Shape | Ring |
| Brand | OURA |
| Style | Modern |
| Color | Silver |
| Target Audience | Unisex Adult |
From the manufacturer
Size before you buyThe Oura Ring 4 Sizing Kit is the best way to ensure an accurate experience. With a purchase of the sizing kit, you’ll receive a $10 Amazon credit towards your Oura Ring 4.Learn More
