YunFeng LINK app analytics for January 9

Special Note: 1. The data collected by the smart watch is for reference only and cannot be used for any medical purposes. 2. Any data displayed on the APP is for reference only and cannot be used for any medical purpose. Features： 1. Establish connection and communication with the watch via Bluetooth. 2. The APP can manage the alarm clock on the watch. 3. The APP can read the sports statistics in the watch and display it to the user in a visual form; 4. The APP supports account registration, account login, password modification, account logout, and account cancellation.