1)wifi, bluetooth,printer 2)optional gps, gprs,barcode scanner, rfid,camera 3)4000mah ... 4)SDK,Sourcecode free SPECShandheld pda with thermal printerOSCPU WINCE5.0,MOBILE6.0, support different global languages.S3C2442,ARM9, 400MHZMemoryFlash MemeoyExpansionMemory 64MB ...