OURA Oura Ring 4 Silver - Size 8 Smart Health Ring with 5-8 Day Battery

Experience continuous health insight with the Oura Ring 4 in sleek silver. The all-titanium ring sits comfortably on any finger and uses Smart Sensing to capture more than 50 metrics, from deep-sleep stages to heart rate variability, stress levels, and women's health cycles. Because it tracks without a screen, you can wear it day and night while it quietly learns your patterns and delivers personalized readiness scores. A single charge lasts five to eight days, so you forget it's even on. The included sizing kit ensures you choose the perfect fit before you buy, and the ring supports easy swapping between multiple Oura devices. Your purchase includes the first month of Oura membership, giving you instant access to the full app experience, with affordable subscription options thereafter. Whether you're optimizing workouts, improving sleep quality, or simply staying aware of your overall wellness, the Oura Ring 4 puts actionable data at your fingertips.