the unique design and quality workmanship will amaze not only your eyesight but also your hearing. thanks to two speakers, complete with a subwoofer, you will feel that the action is taking place right next to you. product features: connection - 3.5 mm jack, usb output power - 30 w frequency range - 20 hz to 20 khz signal-to-noise ratio - 70 db external power supply the omen command center is required to set the backlight physical specifications: dimensions: 85.7 a - 151 a - 78.8 mm (speaker), 213 a - 185 a - 245 mm (subwoofer) weight: 0.3 kg (speaker), 2.4 kg (subwoofer) package contents: 2 a - speaker + 1 a - subwoofer usb cable 1.2 m jack/aux cable 1.5 m power adapter