4 Dynamic Lighting ModesSoulion newly upgraded R50 has 4 dynamic LED lighting modes: gradient mode, breathing mode, rhythm mode and monochrome fixed mode, which you can customize according to your preferences. The light button can turn on/off the light USB ModePlug into the USB port for power, press the "M" key to select "Aux Mode", the 3.5mm jack for sound. The soundbar is widely compatible with various devices such as PCs, laptops, tablets, smartphones and more Bluetooth ModePlug into the USB port for power supply and press the "M" key to select "Bluetooth Mode". Search "R50" on your smartphone and connect. Press and hold the light key for three seconds to clear the Bluetooth memory and connect again. The Bluetooth connection must be within a certain range (10 meters / 33 feet) to remain stable Clear SoundThis bluetooth computer speaker is equipped with unique boosters and two independent diaphragms, providingcrisp, rich sound to