The Wacom Bamboo Ink Stylus is a convenient tool for writing and drawing with your favorite tablets and touchscreen devices. It's compatible with both Wacom Active ES and Microsoft Pen Protocol (MPP) for use with a wide variety of systems. Moreover, it has 4096 levels of pressure sensitivity for precise input. Its two side buttons can also be programmed for quick access to shortcuts and commands. Better yet, no pairing is needed. Powered by a single AAAA battery, it can last up to 15 months of use, averaging two hours a day and five days a week.