ET390 Smart Watch is a health-focused wearable designed primarily for women. It combines everyday fitness tracking with advanced wellness monitoring, featuring a 1.27-inch display, Bluetooth calling, and compatibility with both iOS and Android. Key Features & SpecificationsHealth & Wellness: Includes built-in ECG measurement, body temperature tracking, sleep monitoring, and a menstrual cycle tracker. Connectivity: Supports Bluetooth calling when paired with your smartphone. Fitness: Features multiple sports and exercise modes. 1 Day Dispatch!.