1) wifi,UBS port/rs232 2)1900mah/3800mah Battery 3) SPECSbarcode scanerOSCPU WINCE5.0,MOBILE6.0, support different global languages.,ARM9, 400MHZMemoryFlash MemeoyExpansionMemory 64MB SDRAM 128MB NAND FLASH,Expandable 2G by expansion slotDisplayType sizetransflective TFT QVGA color; touch screen ,backlight3.5'',resolution 320x240 dpi ,sunlight viewableOperating Keys7 custom keys,enclosed stylus ...