I’ve had it 2 years. Still excellent condition. I used to wear a whoop then oura. It’s an amazing device, amazing technology, lightweight and stylish. My anniversary is coming up and my bf is buying me the new generation 4. This ring is on sale with oura for $350, was $450. There’s an easy transfer device option and you can sign up for the Oura membership ($5.99 per month) and download the app etc. Can link it /integrate with many other apps and devices for exercise, Apple, garmin, menstrual cycle, etc. all things health - health is truly beautiful