GTS4 multi-functional smart watch with Bluetooth calling lets you answer/make calls directly on your wrist. Built-in high-precision sensor supports 24-hour heart rate, blood pressure, blood oxygen (SpO2) and sleep quality monitoring, helping you track health status in real time. Features SOS emergency call and smart message notifications for calls, SMS and social apps. Equipped with multiple sports modes to record workout data accurately. Stylish lightweight design, comfortable to wear, ideal for daily use and fitness training.