Product Description Super Music USB Pad/Multifunctional Music Mouse Pad/USB hub mouse pad 1) 2 USB 2.0 port; High-speed transmission and download 2) USB multifunctional card reader(SD, MMC) 3) Super mini stereo speakers 4) Adjustable volume 5) Internal high sensitive microphone with "PTT"(push to talk) function 6) Superb bravery LED blindingly bright 7) The sound switch makes the sound and light to be easily controlled 8) Be connected to external speakers, earphone or microphone freely 9) Suitable for any kind of mouse 10) System requirements: Windows Me/2000/XP/Mac OS; No driver required 11) USB and audio cable(cable length: 1600mm) 12) Size: 279mm*240mm*28mm