Thank you for using our product. KUMI APP is a companion app for our watch. KUMI App can synchronize data such as steps, calories, mileage, sleep and exercise records recorded by the watch. KUMI App will push the phone call and text message content to the watch, in order to prevent you from missing key information (this feature requires your authorization). You can use the App to configure the watch's sedentary reminder interval, alarm clock, backlight, and weather synchronization, so that you c