The wearable-tech company Ultrahuman has debuted the Rare smart ring, which is hand-crafted with 18-karat gold and platinum.

However, on the night she had two drinks, many of her results—such as resting heart rate, HRV, body temperature, recovery, ...

The world’s first luxury smart ring is here—or so the company Ultrahuman says. The brand has just unveiled its Rare smart ring, which is hand-crafted with some of the earth’s most precious ...