5 DYNAMIC LIGHT MODES: With 5 colorful led lights effects, which can be switched in one click. You can also turn on/off the light by the control button. With these lights to enhance the atmosphere of listening to music watching movies and playing games USB PLUG & PLAY: Just plug in the USB port for power and sound. Press the " M " button to PC mode to start and control the volume +/- with rotate button on the computer speakers BLUETOOTH MODE: Built-in V5.3 Bluetooth technology, allows the speaker connect cellphone, tablet, PC via Bluetooth, more convenient playback. Press the " M " button switch to bluetooth mode and then search " R60" on smartphone/tablet to connect STEREO & CLEAR SOUND: Frequency range of 20 Hz - 20 KHz. The SOULION computer speakers can provide clear & loud sound, bringing you Immersive sound effect and enhance your listening experience when you enjoying indoor movies, videos, music and games EASY TO USE: Rotary knob for power on/off