Oura has released the Oura Ring 5, positioning it as the smallest smart ring on the market. Multiple outlets report that the Ring 5 is 40% smaller than the previous generation, measuring about 6.09mm wide and 2.29mm thick, and weighing as little as 2 grams depending on size. The ring also uses upgraded, re-engineered sensors designed to improve precision and skin contact across a wider range of finger types and skin tones. Oura pairs the hardware changes with a new software “portfolio,” described as more proactive and personalized. Reported features include health tracking across more than 50 metrics, sleep and activity monitoring, and updates aimed at more consistent data. Several sources also highlight new software elements such as “Health radar” with blood pressure signals and nighttime breathing, improved live activity tracking and more accurate automatic detection for multiple activities, and GLP-1 insights that consolidate dosing, side effects, and related information. The Ring 5 supports 6 to 9 days of battery life between charges and is waterproof up to 100 meters. Pricing is reported to start at $399, with preorders and availability through Oura and third-party retailers such as Amazon, Walmart, and Currys.