Circular introduced its Ring 3 series smart rings, covered by The Verge, TechRadar, and Engadget. The lineup includes the Ring 3 Pro and Ring 3 Slim. Reports state both models add NFC for contactless payments. The Pro version includes blood pressure monitoring while the Slim omits AFib detection. The rings also gain a one-line ECG and haptic motor for vibrating alerts. Coverage positions the devices against rivals such as Oura and Samsung.