First of all, a pairing relationship should be established between the mobile phone and the watch. The method is as follows: Turn on the Bluetooth function of mobile phone and watch, set the mobile phone to "visible to all", search for Bluetooth devices in the mobile phone, and select the connection after finding it. The password is: 0000. After the pairing is completed, the connection is successful, OK.
I hope I can help you, and I hope to adopt it!