OURA Oura Ring 4 - Ceramic Cloud - Size 13 - Smart Ring | Non-Standard Fit – Measure with Oura Ring 4 Size Kit | Sleep, Heart Rate and Fitness Tracking Wearable | 8-Day Battery, iOS/Android Compatible

Oura Ring 4 Ceramic is a modern expression of our revolutionary smart ring technology, blending refined elegance with everyday durability. The Ceramic Collection is available in sizes 4-15 and unique colors: Midnight, Petal, Tide and Cloud. Each new color is built to accent your style and personality. This colourful new ring comes with the same cutting-edge technology of Oura Ring 4. Track over 50 health metrics and get personalized insights into your sleep, activity, readiness, stress, heart health, metabolic health, women's health and more. It is built around a breakthrough sensing technology, Smart Sensing, which adapts to your finger to deliver accurate, continuous data. Keep your Oura Ring 4 Ceramic looking like new with the Ceramic Polishing Pad, redeemable once you sync your purchase in the Oura App. Due to the hardness of the zirconia ceramic, it can take on the color of softer metals, like a dumbbell or cookware. Over time, you may notice grey marks on your Oura Ring 4 Ceramic. Rest assured, it's not damaged - it's evidence of a metal transfer and easy to remove with proper cleaning. Use caution when handling metal objects and consider removing your Oura Ring for some activities. The Oura Ring 4 Ceramic Polishing Pad is your partner in keeping your ring in top condition.