This audio device is a refurbished Logitech 2 piece black speaker. Has 10 watts of power with tone control located on side for bass control, and the front has volume and power controls, including a headphone jack and a power adapter. The 3.5 mm audio cord and front auxiliary input enables you to connect two devices at the same time. Works with Windows and Mac OS computers, Smartphones, Tablets or MP3 players. Measures 9.1 x 3.4 x 4.6-inches.