The Circular Ring 2 is one of the latest smart rings available, having launched in the latter half of 2025. It's a bit of a departure from Circular's previous models, offering a streamlined design and experience, although at the cost of some of its predecessor's more unique features.
I've been testing the Circular Ring 2 for a month, and it delivers a lot of what anyone would want in a smart ring. However, in the shadow of Oura, especially after launching the new Oura Ring 5, it feels like the Circular Ring 2 doesn't really have much room to shine, even with some rather rare smart ring features.
