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Circular’s new smart ring has a built-in ECG
It's a rare feature on a device so small.
Until today, I could count on one finger the amount of smart rings that offered a one-line ECG in such a small package. Today at CES 2025, however, Circular is launching its second-generation ring that promises to keep an eye on your heart health. 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.
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