Handheld rfid reader&pos terminal-Back 1.OS:WinCE,Linux 2.RFID:LF,HF,UHF 3.Barcode,GPS,Printer,Fingerprint pos 4.GPRS ... ,WiFi HANDHELD RFID READER & POS TERMINAL-MS-2200-Back Software OEM service ... : 128M(Extend 1G);SD card supportl Screen: 2.8inch(transflective)TFT QVGAl Key-press: 25 key-press, waterproof; power key, numeric ...