Bass DiaphragmSoulion newly upgraded R50 soundbar is equipped with unique boosters and two independent bass diaphragms, providing rich treble and powerful bass to meet your audio needs for watching movies, listening to music and gaming. Aux and Bluetooth ModeTwo connection modes: USB powered with bluetooth and 3.5mm aux modes. The 3.5mm Bluetooth speaker is compatible with desktops, PCs, laptops, tablets, mobile phones, projectors and monitors. (Note: Bluetooth mode needs USB powered). 4 Dynamic Light ModesThe R50 computer speakers have 4 dynamic LED lighting modes: gradient mode, breathing mode, rhythm mode and monochrome fixed mode, which you can customize according to your preference. The button on the right turns off the light. Long Press Clear Bluetooth MemoryThe pc speaker uses a one-touch 'M' key and adds a USB/Bluetooth mode prompt sound. Press and hold for three seconds to clear the Bluetooth memory, making it easier and more convenient to use.