Designed to use both on capacitive touch screens and paper, the Acer Iconia Tab Duo Stylus Capacitive Pen functions as a ballpoint pen and stylus all in one. * The durable rubber end on the Stylus enables smooth motion and makes navigating, writing and drawing on your Tab a breeze without damaging your screen. * The Pen portion of this device is perfect for everyday writing purposes. Go from navigating your Tab with the stylus to taking notes in a snap.