Circular Ring Slim gets trim to battle Oura for smart ring crown
Look out Oura! Smart ring rival Circular is back with what it attests isn’t just the world’s thinnest and lightest health ring, but the slimmest and lightest wearable per se. The follow-up to the Circular Ring Pro enters an increasingly competitive smart ring market, but distinguishes itself at just 2.2mm thick and weighs just 2 | Trusted Reviews