GoKawiilCircular launches Ring 3 Pro and Slim smart rings with NFC payments
Circular introduced its Ring 3 lineup, split into a feature-rich Pro model and a lighter Slim version, both equipped with NFC chips for contactless payments and vibration-based alerts for alarms and reminders. The Pro adds FDA-cleared ECG for Afib detection, blood pressure trend tracking, glucose tracking and deeper sleep analysis with up to 12 days of battery, while the Slim focuses on core metrics like heart rate, HRV, SpO2 and skin temperature with up to 10 days of battery.