Oura unveiled the Ring 5, a smart ring that’s 40% smaller than its predecessor, measuring just 6.09 mm wide and 2.29 mm thick. Despite the compact form, battery life stays near a week per charge. The redesign touches mechanical, electrical, optical and sensing components, letting the device look more like a traditional wedding band.

The new hardware supports a revamped sensor suite with precision‑engineered domes, stronger LEDs and twelve signal pathways, which Oura says improve accuracy across finger sizes and skin tones. Software‑wise, the flagship Health Radar feature adds Blood Pressure Signals and Nighttime Breathing analysis, delivering continuous cardiovascular trend data and a 30‑day view of sleep‑related breathing disturbances.

Pricing starts at $399 for Silver and Black models, with premium finishes at $499. An optional charging case sells for $99, and a $5.99‑per‑month membership unlocks full analytics. Global pre‑orders open today, and shipments begin June 4, marking Oura’s most aggressive push into clinical‑grade health monitoring.