Soulion R60 Bluetooth Computer Speakers, Usb, Usb-C To Usb Adapter Included ?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 and volume +/-. One click light button to turn on/off or change light modes. Click ?M? button to change PC/Bluetooth/AUX Mode (NOTE:3.5mm AUX Cable Not Included). Long press for 3s to clear the bluetooth memory ?WIDE COMPATIBILITY?Compatible with PC, Computer, Laptop, Smartphones Tablet. It can be plug-n-play with USB, also equipped with a USB C to USB Adapter which makes the speaker work well with Type-C port only devices like Macbook Air Pro, smartphones or other devices