Huawei's watch3 smart watch can be connected to a Bluetooth headset. Perform the following steps:
First, find the Bluetooth function in the function Settings of Huawei watch3 and turn on the Bluetooth switch of the watch3.
Then switch the Bluetooth headset to search pairing mode;
Finally, click on the Huawei watch3 screen to search and pair successfully, and you can use it normally.