Function of Integrate Card Reader and USB Flash Disk Surport USB2.0 Speed: 480Kbps Antenna inside Card separation Portable and Practical Login Internet by EDGE/GPRS network, implement the demand for high-speed mobile Internet Expand the capacity at the U-disk free You can access to memory card of other mobile devices conveniently by Card Reader Features the rotary USB2.0 interface High-speed wireless network card Function of Built-in USB Flash Disk, Maximum rate: 480Mbps Card Reader, Support USB2.0 Card separation Antenna inside Power:5.0V/300mA Maximum Power : 5.0V/300mA Size and Weight 90(Length)x32(Width)x9(Height)mm/22g Qperating System Windowns XP/2000/Vista Environment 850/900 MHz GSM/GPRS/EDGE GSM Power Class4/EDGE E2 1800/1900MHz GSM/GPRS/EDGE GSM Power Class1/EDGE E2 (850/1900MHz-optional) Size and Weight 90(Length)x32(Width)x9(Height)mm/22g