Excellent sound performance ----- equipped with an upgraded 2.0-channel full-range stereo core, delivering rich and balanced stereo, clear bass and bright, rounded sound. Whether you are playing games, watching movies or listening to music, the excellent sound performance brings you a pleasant experience. Easy-to-use volume control knob ------ Rotate the volume knob to directly control the switch, adjusting the volume easily and Precise Plug and Play, wide compatibility -------- USB power supply + 3.5mm AUX-in audio cable + 3.5mm AUX audio interface, suitable for most PCs, laptops, TVs, mobile phones, tablets, MP3 players devices and other equipment. The USB cable can be plugged directly into a PC USB port or any 5V charger power supply. An additional 3.5mm audio interface with headphone jack lets you enjoy private listening moments.