With 6 watts of peak power. the Logitech® z150 Multimedia Speaker provides clear stereo sound that is loud enough for you to enjoy around the home. Control is simple and convenient with integration of volume and power. while the multimedia speaker includes a handy headphone jack for your private listening pleasure. For plug-and-play simplicity. the 3.5mm auxiliary input can be connected to your laptop or smartphone for simultaneous connectivity. The z150 is tested and tuned at the state-of-the-art Logitech research and development labs.