... chip CPU: centrality Atlas-IV 500MHz AT840 LCD: 5.0-inch TFT 4-line resistance touch screen Operating system: Windows CE.Net ... Supports SD/MMC card slot (maximum 8GB) Supports WMV9, MPEG-4, WMV, ASF, AVI, MP3, WAV, JPG, GIF, BMP and TXT ... .5ACharge modeExternal DC POWERBattery1500mA/H 3.7VWorking time(max.)3-4 hoursPower saveAuto- enter idle state ,auto-off backlightDisplaySpec5TFT LCD Display ...