3.5" PDA ,handhelds,handheld device,handheld terminals, ARM926 based, WINCE with ... reader is optional 3.5" PDA ,handhelds,handheld device,handheld terminals, with barcode reader,GPRS, RFID reader ... RFID (13.56M) is optional (the price is not included)7. Backup: SD card or FLASH8. Develop ... to 50 Storage temperature:-20 to 5512. Communicate on: USB /Wifi/CDMA/GPRS/Bluetooth , ( wifi ,Bluetooth or ...