1. Open your Dangbei Mars Pro projector.
2. Short press the [Power key] on the remote control, and then select the Bluetooth Speaker mode.
3. Go to Settings on your smartphone, and go to Bluetooth.
4. Choose the device named by Dangbei to pair the two devices, like "Dangbei Mars Pro".
5. When the pairing is successful, you can hear the note "Bluetooth connection is successful". Now you can enjoy the music from your phone.