Logitech X-240 2.1 Channel W/Subwoofer Computer Speaker System Tested & Working. Sounds great! 120v standard wall plug. Can be used for a computer or any device with a 3.5 mm stereo output Jack. Woofer output level adjustment is on the back. The wired power remote has the power on off switch, volume control, auxiliary input socket and a 3.5mm headphone socket along with a plug to connect to the source equipment. Nice preowned condition. Woofer is about 8.5” h x 6” w x 8.375” d. Speakers at 7” h x 2.5” w x 4”d. A very nice sounding system!