Oura Ring 4 brings you closer to what matters most — your health. With an updated all-titanium design, this smart ring features Smart Sensing, a new sensing platform that doesn’t just measure your biometrics but also adapts to you. It provides insights into over 50 biometrics including sleep, readiness, activity, heart health, stress, metabolic health and women’s health. | Oura | | OR4 | Smart Ring | Size Before You Buy with OR4 Sizing Kit | Size 8 | | 2024) | Stealth | Best Buy