USB cable for , plug and play.-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 + metalLightweight 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 sound of music, movies, and games.Speaker system: 2.0 speaker : 6WCompatible system: Window XP, Vista, Win 7/8, and OSXColor: BlackMax width of : 2.1cm / 0.82inPackage Contents:1* Two stereo speakersOnly 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.