That, however, could be changing with the new Ultrahuman Rare line, which coats its current generation of Ring Air models in metals like platinum or 18-karat gold. Are there other differences ...

The latest in wearable tech doesn't look much like tech at all. Ringly is an 18k-gold plated ring that connects with a smartphone to discreetly notify the wearer when she gets a call or text.

Watson and Ahmed worked together for seven months to create the stunning ring, which features 18k white gold and a handcrafted symbol of love from Idar-Oberstein, Germany’s gemstone capital.