The ViewSonic NH8 Projector is equipped with a Bluetooth speaker, and users can connect the device wirelessly and use ViewSonic NH8 Projector as audio playback.

To connect and pair devices:
Home > System Settings > Preferences > Audio Mode > Bluetooth Speaker/External USB
a. Press the power button and select the audio mode.
b. You will hear a sound after entering the speaker mode.
After pairing, if both the projector and the device are powered on, they will automatically connect via Bluetooth.
Tips:
• You can only exit Bluetooth mode by pressing the power button.
• If a 3.5mm audio cable is plugged into the Audio out jack, the audio signal will be automatically switches to audio port.
Read more:
ViewSonic NH8 Projector HDMI Connection Guide