The Logitech Z150 Multimedia Speakers deliver clear stereo sound with 6 watts of peak power, loud enough for enjoyment around the home. Each of the two 5 cm (2 inch) drivers provides 3 watts of clear-quality stereo acoustic sound. The speakers feature integrated volume and power controls for simple and convenient operation. A handy headphone jack is included for private listening. For simultaneous connectivity, the 3.5mm auxiliary input can be connected to multiple devices such as laptops or smartphones. The speakers are tested and tuned at Logitech's research and development labs. The color is Midnight Black and it includes a UK plug.