The newly launched Oura Ring 5 is designed to be 40% smaller than its predecessor, the Oura Ring 4, with a thickness of just 2.28 millimeters, enhancing comfort for users. This smart ring boasts an impressive battery life of six to nine days and features enhanced sensor accuracy, achieving 99% precision in heart rate detection and 95% in sleep tracking. Constructed from titanium, the Oura Ring 5 is also water-resistant up to 100 meters, making it suitable for swimming. While it introduces new software features, existing users of the Oura Ring 3 and 4 can access these updates as well. The ring tracks over 50 health metrics, including sleep phases, workout recognition, active calories burned, and personalized activity goals. Additionally, it integrates a skin temperature sensor and provides insights into cycle and stress tracking. The Oura Ring 5 is available for pre-order, priced at $399 for the glossy finish options and $499 for matte and metallic finishes. A subscription costing $5.99 per month or $69.99 annually is necessary to unlock most features.