Is the Oura Ring Gen 4 worth it? Here's what we think after four months of testing

We liked the Oura Ring Gen 4 so much that we named it the best smart ring and the best sleep tracker on the market. That does not mean it will work for everyone, though, especially in the long term. This is a breaking news story from Live Science. Stay informed with the latest science news and updates. For more comprehensive coverage of this developing story, visit the original source.