Adesso iMouse T50 Wireless Programmable Ergonomic Trackball MouseMeet one of the newest models of the Adesso Trackball product line, the Adesso iMouse T50. This device is cable free by utilizing the 2. 4 GHz radio frequency technology, offering a wireless range of up to 30 feet. Its also fully programmable, meaning every mouse button can be customized to your preferred function with its programmable driver. With its 5 levels of DPI resolutions (400 4800), the optical trackball provides superior accuracy and smooth