The CIRCUL RING operates in Elite Mode, providing medical-grade SpO2 monitoring at 1-second intervals, perfect for sleep monitoring and continuous health tracking. The battery lasts 3-7 days on a single charge, and maintains over 80% of its capacity even after 300 charging cycles.
For convenient charging, the ring comes with a portable charging case featuring an embedded battery. A full charge from 0% to 100% takes about 60 minutes, allowing you to power up your ring anytime, anywhere.
