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Oura Ring 4 is built around a breakthrough sensing technology, Smart Sensing, which is powered by an algorithm that works with research-grade sensors to dynamically adapt to the finger and deliver accurate and continuous data, day and night. The lightweight, all-titanium design of Oura Ring 4 features recessed sensors for a smooth interior shape and thinner profile, making it more comfortable for 24/7 wear. By combining Smart Sensing and the sleek new design, Oura Ring 4 is able to achieve both exceptional accuracy and improved comfort without having to sacrifice one for the other.

Enhancing the Value of Oura Membership with New Features

Oura Ring 4 provides an unparalleled degree of accuracy, comfort, and personalization through its new Smart Sensing technology. Smart Sensing is powered by an algorithm that works alongside the research-grade sensors within Oura Ring 4 to respond to each member’s unique finger physiology. The sensors, which more than double the number of available signal pathways from eight to 18 as compared to Oura Ring Gen3, automatically adapt to find the best signal path, ensuring continuous, accurate data in any situation, all while optimizing the battery to achieve up to eight days of battery life.
The findings showed that Smart Sensing enabled:

• 120% improvement in signal quality for blood oxygen sensing (SpO2), translating to a 30% increase in accuracy in average overnight SpO2 measurement
• 31% fewer gaps in the nighttime heart rate
• 15% more accurate breathing disturbance index (BDI) thanks to the higher signal fidelity
• 7% fewer gaps in the daytime heart rate

Through these elements, we’ve created a visual language that reflects where Figma is today and points to where we’re headed—a place where anyone can bring their ideas to life, regardless of their role or background.

Ring’s approach to activity is unique

Ring’s approach to activity is unique, championing a belief that all movement counts and putting equal emphasis on outputs and rest and recovery. Automatic Activity Detection (AAD) gives Oura Members a holistic view of their daily movements, from dancing to gardening to dedicated workouts. Previously, Oura Members could manually track their heart rate for five activity types. Now, across more than 40 different activities, AAD provides an even more comprehensive view of activity with the addition of automatic heart rate detection and heart rate zones; members no longer need to log heart rate manually. Tracking heart rate zones during exercise can help members regulate cardiac output, increase VO2 max, and improve overall fitness.

Stress

Ring’s launched its first stress feature, Daytime Stress, to empower members to learn how to better handle periods of physiological stress, benefitting their health and resilience in the long term. With the latest update to the feature, members can see daily movement, activities, and tags in the context of their Daytime Stress so they can better understand the physiological impact of different habits and behaviors.