Oura Ring 3 vs Oura Ring 4: Opt for the older, discounted smart ring or the newest?

The Oura Ring 4 (left) has receded sensors that make it more comfortable compared to Oura Ring 3 (right). Nina Raemont/ZDNET Considering buying an Oura Ring to track your sleep, activity, or stress? Oura is taking up to $200 off its third-gen smart ring, depending on the finish and size. This deal applies to the Oura Ring Heritage and Oura Ring Horizon, two third-generation smart rings. Also: The Oura Ring 4 is ZDNET's best product of the year The deal on the earlier generation Oura Ring 3 is so low because Oura recently unveiled the Oura Ring 4. The Oura Ring 4 is an impressive and well-designed smart ring that blows its competitors (and even the Ring 3) out of the water. But does that mean you should buy the newer Ring 4 over the less expensive Ring 3 that's on sale right now? It all depends on what features you prioritize in a smart ring. I break down the differences below. Specifications Oura Ring 3 Oura Ring 4 Battery life Up to seven days Up to eight days Charging time Bet ... Read full article.