Oura Ring 4 Ceramic Midnight – Sleep, Activity & Women’s Health AI Advisor | Up to 8 Days Battery Life

Meet Oura Ring 4 Ceramic Midnight

The Oura Ring 4 Ceramic Midnight blends refined elegance with everyday durability. Its high-performance ceramic exterior feels smooth to the touch and stands up to daily wear, while a comfortable interior keeps contact gentle on the skin. Available in sizes 4–15 and colorways Petal, Tide, and Cloud, this ring is designed to complement your style as you track a wide range of signals throughout the day and night.

Powered by Smart Sensing, the ring adapts to your finger to deliver accurate, continuous data around the clock. It tracks more than 50 metrics, including sleep patterns, daily activity, readiness, stress indicators, heart health signals, and dedicated women’s health metrics. This blend of technology and design aims to offer a complete picture of how you move, rest, and recover, without intruding on your routine.

Battery life extends up to 8 days, so you can wear it through workouts, commutes, and evenings without frequent charging. The recessed interior sensors are designed for comfort, even for sensitive skin, helping you forget you’re wearing it until you glance at the app for a quick read on yesterday’s trends or tonight’s plan.

Sizing is essential with Oura Ring 4 Ceramic Midnight. A dedicated sizing kit ensures you find the right fit before purchasing, improving comfort and data reliability. New members receive the first month of Oura Membership included, with ongoing access through the app. The ring is HSA/FSA eligible, and the Ceramic Polishing Pad helps keep the finish looking near-new when used as directed.

Color enthusiasts will enjoy the color options, and the polishing pad provides a simple way to maintain the gleam over time. This combination of durable materials, thoughtful fit, and insightful data makes the Oura Ring 4 Ceramic Midnight a versatile companion for daily life, workouts, and rest, offering possibilities for understanding patterns rather than guarantees.

Key benefits you may notice

• Track over 50 metrics including sleep, activity, readiness, stress, heart health, and women’s health
• Adaptive Smart Sensing delivers continuous data day and night
• Up to 8 days of battery life with a minimal, distraction-free experience
• Comfortable recessed interior sensors designed for sensitive skin
• Sizing Kit to help you find the perfect fit before buying
• First month of Oura Membership included for new users; HSA/FSA eligible

Care and maintenance

• Use the Ceramic Polishing Pad to refresh the finish after cleaning
• Avoid prolonged contact with abrasive metals that may transfer color
• Clean gently with a soft cloth; avoid harsh chemicals
• Remove during activities that involve heavy metal contact to preserve finish