HIFI CLEAR SOUND 5W active full-range drivers deliver HiFi clear sound. Anti-magnetic technology reduces static noise for more vivid, clear audio. SIMPLE AND MODERN USB wired desktop soundbar measures 31.5 x 6 x 5.6 cm (12.4 x 2.36 x 2.2 in). Clean, modern design that fits a contemporary desk setup. VOLUME KNOB CONTROL Rotate the dial clockwise to increase volume, counterclockwise to decrease volume or turn off. Built-in sound decoding chip enables synchronized control of computer system volume via the digital knob. AUX INPUT 3.5 mm AUX input for sound. Connect to the headphone jack on PCs, laptops, tablets, mobile phones and other mobile devices. USE SCENARIOS - Desktop or home office: enhance PC audio for music, videos, and video calls. - Laptop or tablet on the go: compact setup for study, work, or presentation time. - Mobile devices and gaming: enjoy media playback from phones, tablets, or other devices with a 3.5 mm output.