● 2.01" Super Large Amoled DisplayBoasting a 2.01-inch class-leading super large screen with unprecedented high resolution of 410x520 pixels, Ks Pro allows you to view all the data and metrics on the bright, colorful and stunning display with a quick glance. Combined with smooth operation and elegant design, Ks Pro provides you the ultimate user experiences.● Powered by Kieslect OSKs Pro is powered by Kieslect OS, which is a whole new system designed by Kieslect with a faster, smoother user experience. You can insert your personal data to the app and check your health report including heart rate, respiration, stress level and sleep analysis etc. at any time.● Abnormal Heart Rate AlertIf your heart rate goes above or below the threshold you set, you will get an abnormal alert on your watch. Take care of your heart with accurate heart rate monitoring and keep an eye on possible atrial fibrillation – the common form of irregular heart rhythm.