These were removed in the Gen 4 design, resulting in a more natural wearing experience. After six months without those bumps in our US size 12 Ring 4, I confidently say I prefer the Gen 4’s comfort.

(The charger is also matched to the size of your ring.) The sizing is different between the gen 3 and gen 4 rings—more below on what to expect if you’re upgrading. So how do you find your size?

For starters, a ring size three fits a finger that measures 14 millimeters, and for every half-size after size three, the measurement jumps by .4 millimeters. Consider the following must-knows ...

picking the correct size is arguably the most important step in your smart ring purchasing journey. The Ring 3 and Ring 4 are available in slightly different sizes. Find the details below.

The Oura Ring 4 weighs between 3.3 and 5.2 grams, is 7.9mm wide, and is 2.88mm thick. It’s now available in more sizes, ranging between size 4 and size 15. It’s available in six different ...

That’s not to say that the Oura Ring 4 is large or chunky, far from it. It’s very slim at 2.88mm thick and 7.9mm wide, and weighs just 3.3 to 5.2 grams depending on your size. The newest ...

Oura Ring 4 is available for preorder today, starting at $349. The new model offers improved battery life and sensor accuracy, with more size options. Automatic activity tracking, new stress ...