Lenovo 4X80H34887 ThinkPad Active Capacitive Pen, Stylus, Black

The Active Pen from Lenovo is made for select Lenovo notebooks and lets you digitize your drawings and notes. It features pin-point accuracy, palm rejection technology, and 2048 levels of pressure sensitivity to imitate a pen on paper experience. It's powered by a single AAAA battery and also has two built-in buttons on its side for quick access to additional functions. For your convenience, a USB pen holder and three replacement tips are included.