Oura Ring 4 Features Improved Accuracy, More Comfortable Design

As the smart ring wars heat up, the Finnish brand is touting the quality of its data as a key differentiator

Oura is going all-in on quality as it gears up to fight off competition from the likes of Samsung in the red-hot smart ring space. 

On Thursday, the Finnish brand unveiled the Oura Ring 4, which features new and improved sensors designed to offer more accurate readings, longer battery life, and increased comfort for wearers. 

The Oura Ring 4 is highlighted by Smart Sensing, with research-grade sensors housed inside the ring that adapt to the finger to deliver more accurate data for metrics including blood oxygen sensing, breathing, and heart rate. 

Thanks to Smart Sensing, Oura says the newest version of its ring offers notable improvements in overnight blood oxygen measurements (SpO2), breathing disturbance index (BDI), and daytime and nighttime heart-rate tracking. 

The smart sensors are recessed within the Oura Ring 4, which Oura says provides a more comfortable wear. In the Oura Ring Gen3, the previous model, the sensors were housed in a raised dome, meaning many users could feel the sensors while wearing the ring. 

Available for preorder now and set to start shipping October 15, the Oura Ring 4 will retail for between $349 and $499 depending on color and will offer up to eight days of battery life. 

Oura is also redesigning its app to provide users with a more streamlined overview of their overall health picture, including easy access to daily and long-term health metrics like stress and resilience, women’s health, and heart health.

“Oura Ring is designed to be a personal health companion, giving our members a holistic view of their health by pairing personal data with meaningful, actionable insights to facilitate long-term changes,” said Oura CEO Tom Hale. “The next-generation Oura Ring 4, reimagined Oura App, and the development of the Smart Sensing platform represent significant steps forward for wearables across accuracy, comfort, personalization, and design.”

Can Oura Stay on Top?

Oura, which has sold over 2.5 million rings worldwide and is nearing $500 million in annual revenue, has dominated the smart ring market since the brand was founded in 2013.

However, the space has become more crowded as of late, with new brands entering the market as demand rises for smart rings, which track a host of metrics including heart-rate variability (HRV), blood oxygen rate, body temperature, and sleep, and offer a lower profile than smartwatches. 

Samsung made headlines earlier this year when it launched its Galaxy Ring, packing it with features that make it a serious competitor to the Oura Ring. There are rumors that Apple could enter the smart ring space as early as 2025, although that’s still highly speculative. 

With the Oura Ring 4, the Finnish tech company appears to be leaning into its reputation as the “OG” in the smart ring space. With Smart Sensing, Oura wants to make it known that its rings provide the best and most accurate data on the market as users look to track their sleep, steps, and stress more than ever before.