Oura Ring 4 Ceramic [Size 4] (Tide)

Oura Ring 4 Ceramic Tide Smart Health Tracker - Premium Zirconia Ceramic Ring in Fresh Blue-Green. Revolutionary Smart Sensing technology tracks 40+ biometrics: heart rate, HRV, sleep quality, stress, metabolic health, women's health 24/7. Unique tide green ceramic finish inspired by traditional celadon glazes - color won't fade. Biocompatible high-performance ceramic with titanium interior (3.3-5.2g). 5-8 days battery life, waterproof 100m. Compatible iPhone/Android Oura App. Pastel blue-green design, sizes 4-15. $499 with Oura Membership. Perfect for wellness enthusiasts seeking advanced health insights with fresh, distinctive style.