this is a high quality optical usb mouse with voip phone features. it can transform into a voip phone with just a flip of the cover. the fully functional keypad and the lcd screen enable you to make/receive voip calls even easier. just plug it into your pc or laptop, and then you can enjoy the full features of skype and many other popular voip applications such as voipbutser, voipstunt, voipcheap, webcalldirect, voipcheapcom, and freecall, etc. auto detection between mouse and voip phone seamlessly integrated with skype, voipbutser, voipstunt, voipcheap, voipdiscount, sparvoip, internetcalls, poivy, webcalldirect, voipcheapcom