USB cable for power, plug and play. Clip-on design allows to fix onto laptop, notebook or PC, and easy to remove. Two stereo speakers can reach a balance sound effect, pure and stereo, and joint together to stand on desk. Built-in volume control, convenient to adjust volume. Material: PC + metal and portable to carry anywhere you like. Two stereo speakers can reach a balance sound effect, pure and stereo making you immerse yourself in the rich sound of music, , and games. Speaker system: 2.0 speaker Total power: 6W Compatible system: Window XP, Vista, Win 7/8, and OSX Color: Black Max width of clip: 2.1cm / 0.82in Package Contents:1* Two stereo speakers Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.