Circular’s new smart ring has a built-in ECG

Until today, I could count on one finger the amount of smart rings that offered a one-line ECG in such a small package. Bodimetrics’ Circul+ debuted in 2021, but what it had in heart-monitoring features it lacked in style, or even looking like a real ring. Today at CES 2025, however, Circular is showing off its second-generation ring that promises to keep an eye on your heart health.

We had a chance to take a look at the rings today at CES Unveiled and they are indeed shiny. They also feel remarkably lightweight. The sensor nodes inside the rings are noticeable when you first slide on the ring, but after a minute or so of wearing it, it hardly feels like you’re wearing a ring at all.

Circular says the Ring 2 boasts improved sensors as well as the aforementioned ECG, an eight day battery life and a better wireless charging dock. The company added that its companion app and AI has been completely redesigned to offer a “more intuitive and refined user experience.” Not to mention that the body is now cast in titanium with four color finishes; Gold, Silver, Black and Rose Gold.

This latest generation doesn’t have the vibrations featured in Circular’s first-gen rings, but the company’s co-founder told us that the vibrations will return in an upcoming iteration. For now, the second-generation rings should hit store shelves in February or March 2025, but the company says it’ll cost you $380 when it does.