product description : logitech s-150 digital usb speaker total rms power : 1.2 watts rms (0.6 watts per satellite) frequency response : 90 hz20 khz driver : 2-inch dynamic drivers connectivity : usb cable (4-foot) cable length : 4-foot (between 2 satellites) * logitech s-150 digital usb speaker has the rich, full digital sound with the edgy design * 2.0 digital usb speaker system * advanced digital usb for premium sound clarity * the high-mirror class front surface and digital power indicator design perfectly fits any desktop pcs and laptop * it provides the side benefit to keep you the neat and the professional working environment * built-in volume up and volume down buttons * built-in mute/unmute button * the slim digital buttons provides easy access of volume adjustment and mute/unmute controls