Oura Ring 5

The Oura Ring 5 arrives as the most refined and capable smart ring on the market, building on over thirteen years of industry-leading innovation. The most immediately noticeable improvement is the size. At 6.09mm wide and just 2.29mm thick, the Ring 5 is 40% smaller than the Ring 4, making it virtually indistinguishable from a traditional wedding band on the finger. This reduction was achieved through a complete redesign of the mechanical, electrical, optical, battery, and sensing architectures, and the result is a ring that is substantially more comfortable for all-day and all-night wear.

Despite the dramatically smaller body, battery life has actually improved, now rated at six to nine days depending on usage, up from five to eight on the Ring 4. An optional $99 charging case provides up to a month of on-the-go recharges, making extended travel seamless. The sensing system has been overhauled with precision-engineered sensor domes that sit closer to the skin, LEDs that are approximately four times more powerful, and twelve optimized signal pathways. Oura states this delivers greater accuracy across more finger types and skin tones, addressing a common criticism of earlier generations.

The headline software addition is Health Radar, a proactive monitoring system that runs continuously in the background, analyzing biometric patterns to surface potential health concerns before symptoms appear. The initial capabilities include Blood Pressure Signals, which track nighttime blood pressure trends during sleep when the cardiovascular system provides its clearest data, and Nighttime Breathing, which monitors for disturbances that may indicate sleep-disordered breathing. The ring also now supports live activity tracking with real-time pace, distance, and heart rate through a connected device, and can automatically detect over forty different activities.

Oura's sleep tracking remains the gold standard in the category, with the algorithm refined over nearly a decade providing the most detailed and consistent sleep staging analysis available. The app presents Readiness Scores, Sleep Scores, Stress Levels, and the AI-powered Oura Advisor, which provides personalized recommendations based on individual biometric trends. Cycle tracking capabilities include fertile window predictions and pregnancy insights, and new partnerships allow members to connect eligible healthcare providers through Oura Health Records.

The persistent trade-off remains the subscription model. The ring requires a $5.99 monthly or $69.99 annual membership to unlock its full potential, which adds up to meaningful long-term cost compared to subscription-free competitors. The starting price has also risen to $399, with premium finishes at $499. However, the Oura Ring 5 is also the most scratch-resistant generation yet, featuring an upgraded physical vapor deposition coating and IP68 water resistance to 100 meters. For users who prioritize the deepest health insights, the most mature ecosystem, and the most comfortable form factor, the Oura Ring 5 is the definitive smart ring of 2026.