Xiaomi Redmi Watch S4, Black - 1.43" AMOLED display with exceptional brightness Classic rotating crown for intuitive interaction One-tap health insights and 150 sports modes Up to 15 days of battery life 326 PPI 60Hz Refresh rate High-precision sensing module 24 7 health protection Heart rate sensor (with blood oxygen sensor) Accelerometer Gyroscope Ambient light sensor Electronic compass Barometer sensor Hall sensor Više informacija na linku