... chipsets, integrated graphics,sound and network cardGraphicCan select independent graphicSignal input interfaceCOMI,DVI,RJ45,Line in,Line out,AV,Microphone,USB ... microphonesFrequency range2.400GHz-2.483GHzFrequency response20Hz-20KHzSignal-to-noise86dBMicrophone jacks audio input3.5mmBattery3.7V Polymer battery (1200mAH)Transmitting distance150MSystem requirementsOperating systemWindows2000 ...