Specification Basic Information Display 1.78″ (368 x 448) Large Retina AMOLED 60Hz HD Display Connectivity Bluetooth V5.1 OS Android 6.0 and above, iOS 11.0 and above. Supported functions will vary with different watches, mobile phones, and countries. Sensor 24-hour heart rate monitoring SpO2 tracking Temperature detection Smart sleep monitoring Exterior Color Black Warranty Information Warranty 01 Year Warranty
