The 2 x 2” (5-cm) drivers deliver 3 watts of clear-quality stereo acoustic sound. You can use the 3.5 mm audio input and auxiliary line to play audio content from multiple devices simultaneously. The power and volume controls are integrated into one knob for convenient access and ease of use. Use the handy headphone jack to connect your headphones and listen to music, movies and games in total privacy. The solid, compact design looks and feels dependable, giving you confidence in its reliability. 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. Loudspeakers. Audio output channels. 2.0 channels. Speaker placement. Tabletop/bookshelf. Number of drivers. 2. Driver diameter. 5.08 cm. Audio.