Operating system: Huawei LiteOS, Intended for: Women's, Men's, Features: Barometer, Built-in heart rate monitor, Built-in speakers, Calorie counter, Compass, Water resistant, Built-in wireless charging, Vibration alarm, Built-in microphone, Gyroscope/Accelerometer, Sleep measurement, Pulse Ox-sensor, Stress level, Activity Tracker, Light Sensor, Irregular Rhythm NotificationsRead more