Then, using a ruler or measuring tape, gauge the length in millimeters, then match the measurement with the ring sizes on the below chart. Using a tape measure will get you an especially ...

You can find the approximate internal dimensions of each Ring 3 size below. The above table should be used as a guide, and we don’t recommend using the dimension chart to pick an Oura Ring size.

Choosing the right size for a smart ring can be a real headache, with customers needing to use sizing kits before purchasing. Patents reveal that companies are developing smart rings that can ...

The new Oura Ring 4 smart ring promises a plethora of health tracking features—but is it worth the $349 price tag? Read the ...

I am disappointed that the Oura Ring 4 couldn’t reduce in size, or produce meaningfully ... I’m a fan of the Resilience metric – as that’s the actionable part of stress tracking.

though it's still thicker than the 2.6 mm Galaxy Ring. Oura Ring Gen 3 in size 11 (top left) and Oura Ring 4 in size 13 (bottom right). Although it's a touch thinner than the comparable Gen 3 ...

Premium According to a patent document spotted on the China National Intellectual Property Administration (CNIPA) website by 91mobiles, Xiaomi is developing an innovative smart ring that could ...

The best ring lights are a must if you're looking to improve the quality of your videos, whether you're streaming on YouTube or hosting a work Zoom call. These simple, donut-shaped devices ...

You can really notice the difference when sliding the ring on and off your finger; it just feels smoother. The Oura Ring 4 also comes in a wider choice of sizes ... (Oura's metric for how well ...

Oura Ring 3 could only make smart rings more attractive. With an all-titanium design, recessed sensors, and a greater selection of size options, the Oura Ring 4 prioritizes comfort. But not for th ...

It also comes in a much bigger size range, with sizes from 4 to 15, although I again sized into my ring size 8. If you buy something using links in our stories, we may earn a commission.

I’m PCMag’s senior analyst covering smart home and wearable devices. I’ve been writing about tech professionally for nearly a decade and have been obsessing about it for much longer than that.