The Oura Ring 5 is a slim, always-on smart ring that turns your health into actionable insight without the bulk of a watch. It tracks sleep quality, daily activity, and women’s health metrics, then uses an AI Advisor to turn that data into personalized guidance for recovery, performance, and overall wellbeing. With up to one week of battery life, a lightweight titanium build, and full Oura App support on Android and iOS, it’s designed to be worn day and night. As the #1 best-selling smart ring and an FSA/HSA eligible device, the Oura Ring 5 is a discreet, clinically influenced wearable for anyone serious about understanding their body.