Ultrahuman has launched 'Rare' smart rings made of 18K gold and platinum. The new range comes in three finishes, priced upwards of $1,800.

Coated in platinum and 18K gold, Ultrahuman's new smart rings offer heart rate, sleep, and stress tracking in a luxurious ...

and desirable PT950 platinum for the Desert Snow model, as both are popular, long-lasting materials used for wedding rings. Ultrahuman claims each Rare ring has been crafted by hand using special ...