Why does this exist? According to the engineer’s note in the manual: “Because modern music is too perfect. The road is not perfect. Your speaker should agree with the road.”

Turn on the speaker. It will automatically enter Bluetooth mode or you can press the button until you hear the "Bluetooth mode" prompt.

Disclaimer: This guide is for informational purposes. The WS-1958BT is manufactured by various OEM partners; button layouts and features may vary slightly by production batch. Always prioritize safe driving—set up your Bluetooth speaker before starting the engine.

The included dial is not a simple potentiometer. It tells a story through haptics.