Logitech's X-140 stereo speakers feature dynamic, real-time bass equalisation to maximise low frequency response while minimising distortion. Use the convenient 3.5 mm auxiliary input to connect your portable MP3 or CD player, and customise your audio balance with easy-to-reach tone and volume controls. Features 3.5 mm auxiliary input - Connect your portable MP3 or CD player. Stereo headphone jack - Connect headphones to enjoy your music privately. Dynamic, real-time bass equalisation - Maximises low frequency response at all volumes. Package Contents Logitech® X-140 Speakers All necessary cables Installation guide 2-year limited warranty<p>Total RMS power: 5 watts RMS (2.5 x 2) Total peak power: 10 watts Frequency response: 80Hz - 18kHz 2.75 high-excursion driver with 3 pressure driver Speaker dimensions 9.5 x 3.9 x 4.9 (H x W x D)