The KODAK TRUFORM 3500 2.4GHz Wireless Ergonomic trackball keyboard offers you an advanced input device with ergonomic design, multifunctional features and a wireless range of up to 30 feet. The design of this keyboard with split key zones and gently sloped encourages natural position of hands, wrist, and forearm in maximum comfort for long use. The keyboard also features an integrated trackball which can take the place of your mouse, making it easier to control the movement of the cursor in your personal computer.