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

Table of Contents Wait, a smart display that tracks your sleep? How about a smart ring like the Oura Ring 4? Can you just use the Apple Watch on your wrist? My preferred way to track my sleep ...

With sensors that track motion, skin temperature, and heart rate, the ring can assess everything from your stress levels to the quality of your sleep. Using the data it collects, the wearable can ...