Logitech V20 Notebook Speakers (Black) Box Content - V20 notebook speakers, Integrated USB cable, Protective travel case, Quick start guide High dynamic headroom circuitry offers greater volume with less distortion Lightweight, portable design that folds away easily in the protective travel case Plug &amp; Play Connection - USB provides power and digital quality audio, no other cables are necessary Total RMS Power - 2 Watts into 4 ohms at 1 kHz at 10% total harmonic distortion (THD) Combined with the 2 inch Max-X high-excursion drivers and 3 inch pressure drivers, maximize bass response