The main function: 1.Exercise : Monitor and record exercise data in real time, provide weekly or monthly exercise trends, and make exercise clear at a glance; 2. Sleep: It can monitor sleep data, record the time of deep sleep and light sleep, and help users understand their sleep situation in real time; 3 Precautions: After setting the bracelet, you can make reminder reminders, clear goals, convenient for users to sit reminders, steps and other personalized settings to provide more living habits. 4. The core functions of the application are: SMS content and incoming call information, which are used to forward to the bracelet for display. 5. Incoming call reminder: The APP sends incoming call related information to the bracelet by obtaining the call information, and the bracelet displays the caller's name or phone number. 6. SMS reminder: APP sends SMS information to the bracelet by obtaining SMS information, and the bracelet will display the sender's name and text message content.