... usb phone,ideal for a present,good for business man on trip,support PC-PC,PC-Phone,etc Cheap pric USB ... with flash memeory, can read/write phonebook free and auto run on PC without install any driver!Support most of voip protocal ... Flash memory inside, dont need to install any softwares,auto-run uSipphone & X-PRO,Completely Play-and-Plug* Support the X ...