The Oura Ring 4 Ceramic (Cloud) is a beautifully crafted smart ring that combines elegant design with advanced health-tracking technology. Made from premium zirconia ceramic, its soft off-white Cloud finish gives it a refined, timeless look suitable for any style. Beneath the minimalist exterior lies Oura’s next-generation Smart Sensing platform, capable of tracking over 50 health metrics including sleep quality, activity, heart rate, temperature trends, and recovery. The ring’s smooth inner surface and recessed sensors provide comfort while ensuring accurate, uninterrupted readings. With water resistance up to 100 meters and a battery life lasting five to eight days, it’s designed for all-day and all-night wear. The updated form factor offers improved durability and a lightweight feel that makes it easy to forget you’re wearing it. Its companion app delivers detailed insights and daily wellness scores to help optimize rest, readiness, and performance. A rechargeable case ensures convenient power management wherever you go. Available in a wide size range, it’s tailored for a perfect, seamless fit. The Oura Ring 4 Ceramic Cloud redefines wearable health tech, merging precision engineering with timeless sophistication.