Rotate the Multi-function Button clockwise to increase the volume and counter-clockwise to decrease it. The RGB ambient light will display the current volume level with bar light effects corresponding to real-time volume changes.
For your reference, the volume adjustment in different channels are as follows:
1. In the Bluetooth channel, the speaker and connected audio device adjust volume synchronously (e.g., adjusting media volume on a phone automatically adjusts the speaker volume, with ambient light reflecting the volume change);
2. In the USB channel, the speaker and connected audio device adjust volume independently (e.g., adjusting media volume on a computer does not affect the speaker volume, and vice versa);
3. In the AUX IN channel, the speaker and connected audio device adjust volume independently (e.g., adjusting media volume on a computer does not affect the speaker volume, and vice versa).