Use a Bluetooth headset with your Mac
Use a Bluetooth®-enabled headset to hear and input audio. After you connect your Mac with the headset and select it as your sound input device, it acts as your computer’s microphone and speakers.
Make your headset discoverable to your Mac (see the documentation that came with your headset).
On your Mac, click the Bluetooth status icon in the menu bar, then choose the headset you want to use.
Note: If the Bluetooth status icon isn’t shown in the menu bar, choose Apple menu > System Settings, then click Control Centre in the sidebar. (You may need to scroll down.) Click the pop-up menu next to Bluetooth, then choose Show in Menu Bar.
The headset is then automatically used as the sound input and output device for your computer. To choose a different device for sound input or sound output, use Sound settings.