Titanium smart ring with comprehensive health tracking including sleep monitoring, heart rate, blood oxygen, skin temperature, and 40+ activity modes. Features advanced sensors (barometer, gyroscope, HRM, SpO2) and delivers readiness scores, cardiovascular age metrics, and illness detection. Water resistant to 100 m, weighs 3.3-5.2 g, and syncs via Bluetooth to iOS 15+ or Android 9+ devices.