Pre loved condition , shows normal wear Rose gold Size 8 Comes with charger The Oura Ring Gen3 and the Oura Membership ($5.99/mo plus tax) work hand-in-hand to help you feel your best. Monitor your sleep, activity levels, temperature trends, stress, heart rate, and more. Whether you’re focusing on your fitness or want to improve your sleep, Oura helps you take control of your health — in style.