Full sleep and health tracking with heart rate, skin temperature measurements, and sleep analysis for personalized insights. Battery life up to 8 days and charging via USB Type C port for extended use. Waterproof up to 100 m and PVD/DLC coating for durability and lasting finish. Hypoallergenic materials with a titanium inner surface and polished metal design for comfort and lightness. Low-energy Bluetooth compatibility with Apple Health, Android Health Connect, and Strava for data synchronization. Sensors and measurements: Multiple internal optical sensors and infrared photoplethysmography provide continuous biometric data collection and automatic activity and nap detection. Design and materials: Ring with gold finish and silver inner band, PVD or DLC coating, and non-allergenic titanium interior ensuring robustness and comfort; weight ranging from 3.3 g to 5.2 g depending on size. Connectivity and battery life: Bluetooth Smart for wireless synchronization, USB-C port for charging, and battery life up to eight days depending on usage, compatible with health apps and third-party platforms for report visualization.