Smartring health and sleep tracker - Health monitoring you can rely on: Measure blood oxygen level with a dedicated sensor and companion app. Continuous heart rate monitoring anytime, anywhere. Real-time blood pressure readings. Smartring puts more health insights in sight and supports on‑demand readings as well as background readings day and night. - Sleep tracking that helps you rest better: The Sleep app works with your smartphone app to help you set a schedule and bedtime routine to meet your sleep goals. See time spent in Core and Deep sleep, and when you woke. View trends to monitor how consistently you’re meeting your goals. The only thing it won’t do is count sheep. - Fitness tracking you can use as a coach: Set an exercise goal and monitor your data in real time, including heart rate zones, steps, calories burned, and distance. Smartring is your coach, community and diary. Ongoing updates bring advanced features to Smartring, helping your training improve over time. - Long-lasting battery with quick charging: It uses an ultra‑low power main control chip to extend battery life. A 0.5 hour charge provides 3–5 days of use, so you can go farther with less downtime.