System:Window CE 6.0 Memory:Nand flash 512MB, Mobile DDR 256MB Display:3.5inch TFT 240*320 Pixels Interface:1*USB2.0(OTG)-Micro USBSocket, 1*RS232 -Micro USBSocket Printer:Thermal printer, paper wm Communcations:GPRS, WIFI, all card reader Dimension:208*85.5*53mm(L*W*H) Weight:595g