Ring 4 - Ceramic Tide - Size 10 - Smartring - Non-Standard Fit – Measure with Compatible Size Kit - Sleep, Heart Rate and Fitness Tracking Wearable - 8-Day Battery, iOS/Android Supported Tide 10

• SIZE BEFORE YOU BUY - Oura Ring sizes are different from standard ring sizes. Size yourself with the Oura Ring 4 Sizing Kit.
• OURA MEMBERSHIP - First month of membership is included with purchase, for new members only. Subscription is 5.99/mo afterwards. Or opt for the annual prepaid option for 69.99. Membership is tied to your account via the Oura App, not your physical ring
• ACCURACY - SMART SENSING - Oura tracks over 50 health metrics, including sleep, activity, stress, heart health, metabolic health,and women’s health metrics. Smart Sensing technology adapts to you — delivering accurate, continuous data, day and night
• LONG LASTING BATTERY - With 5 to 8 days of battery life, no screens and no vibrations, Oura Ring 4 Ceramic allows you to focus on the present. From a workout to a night out — you’re free to forget it’s on. Until you start getting compliments
• DESIGNED FOR 24/7 WEAR - Thoughtfully crafted in high-performance zirconia ceramic, Oura Ring 4 Ceramic combines refined elegance with everyday durability. The updated design is comfortable and is water resistant.