Oura has launched its new Oura Ring 5, claiming it's the world's smallest smart ring. This latest iteration is 40% smaller and lighter than its predecessor, boasting enhanced scratch resistance.

Review: Oura took our favorite smart ring and made it irresistible. For women especially, the Ring 5 is worth the splurge.

I wore the Oura Ring 5 for a month, and it's an even bigger upgrade than expected ...

At a glance Expert's Rating Pros ・Incredibly slim & light ・Improved battery life ・Build quality and range of colours ...

The arrival of the Oura Ring 5 raises two inevitable questions: how much better is it than the Oura Ring 4, and what are the need-to-know differences? While the leap to the Ring 4 mostly concerned ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we earn a commission. Learn more. Harry Rabinowitz Tech Reporter Is the Oura Ring 4 the ...