1. The functions of step counting, sleep monitoring, heart rate monitoring, alarm clock, sedentary reminder, and water reminder do not need to be turned on all the time. You only need to wear the device during exercise. After the exercise is completed, open the APP, the device and the mobile phone will automatically connect, and you can view the data after the synchronization is completed;
2. Incoming call reminders, APP notification reminders, search for mobile phones, search for devices and other functions, because they need to be connected to the device all the time, the Bluetooth of the phone needs to be turned on.