Perfect for MP3, iPod & Laptop! The portable sound system is designed perfect for iPod, MP3, Laptop, etc. Its highly efficient amplifier together with revolutionary full-range micro drivers create deep bass and crystal clear sound. Easy to use, simply connect your audio/visual device using the cable supplied to the input socket at the back of the unit and away you go! The speakers feature four 1.5" micro drivers and deliver a total output power of 4.0WRMS. Also, the unit includes a removable cradle so you can rest your MP3/iPod player in the middle of the speaker unit. Slim in design and weighting only 286g, these speakers easily fit in your briefcase or bag.