... wifi, bluetooth,thermal printer 2)RS232,optional 1D scaner, rfid,camera,gprs 3)4000battery SPECShandheld pda with thermal printerOSCPU WINCE5 ... functionsRFIDBarcode Scaner(ID)CameraGPS(SKG13)LF:125k (ID) HF:13.56M(ISO14443A) (optional)Symbol Laser Barcode reader(optional)2. ... GPRS/3G ,WIFI,Bluetooth RS232 communication, and optional buit-in barcode scaner , rfid card reader and 37.9Khz infrared module