Four powerful speakers, a stereo subwoofer, and an adjustable mid-bass Connectors: USB (power) and 3.5 mm (audio) Scene of application: home Those who are affected: General Weight in gross: 270 grams Two speakers make up the speaker unit. 2x 3W of rated power Response to frequency: 160 Hz to 20 kHz Unit of drive: 2 inch x 2 Connectors: USB (power) and 3.5 mm (audio) USB power source (5V)