The Oura Ring 4 Can Tell You How You Slept or Predict a Cold. Is It Worth It? Reviews by Wirecutter Review: The Oura Ring Is Easy To Use & Helps Me Optimize My Sleep Oura Ring Review: 4 Years of Insights and Experiences Oura isn't launching a fifth gen smart ring this year. Instead, it's zhuzhing up its lineup with colorful ceramic versions of its Oura Ring 4. Image: Oura Oura Ring review: love the feature changes, hate the new subscription AppleInsider Do you feel your phone vibrating when it's not? You're not crazy.