The black Bamboo Pad Wireless from Wacom is a portable navigation device that allows you to utilize pen and multi-touch input. With a 4.52 x 3.07 active area, you''ll be able to navigate through menus and applications using the included pen with 512 levels of pen pressure sensitivity as well as utilize Wacom''s proprietary capacitive technology with up to 4-finger multi-touch gestures. The Bamboo Pad Wireless comes included with an RF wireless kit for wireless plug and play connectivity with a Mac or Windows computer. The included wireless kit uses an alkaline battery, which can last for up to 4 weeks. Please note that actual battery life may vary depending on usage, environment and situation.