1)wifi, bluetooth,thermal printer 2)RS232,optional 1D scaner, rfid,camera,gprs 3)4000battery SPECShandheld pda with thermal printerOSCPU WINCE5. ... 93 x 37.5mmDurability Temp. in operation-10ºC + 45 ºC Temp. in storage-20ºC +55ºCHumidityDrop test5 - 95% (non-condensing)1 ... ,WIFI,Bluetooth RS232 communication, and optional buit-in barcode scaner , rfid card reader and 37.9Khz infrared module