How to use the Marshall Bluetooth app
Short answer
Make sure your speaker is paired with your audio device. Download the Marshall Bluetooth app and follow the in-app instructions to connect it.
Follow these steps to connect your Willen II speaker to the Marshall Bluetooth app:
Push and hold the power button until the speaker turns on.
Push and hold the Bluetooth button until the LED turns to a slow blue pulse.
Select Willen II from your audio devices Bluetooth list.
Download the Marshall Bluetooth app and follow the in-app instructions to adjust speaker settings keep your speaker updated with the latest firmware.