*ONLINE ONLY - Allow extra time for delivery. Ship to store FREE! During checkout select ''Store Pick-up'' as your delivery option.* Adesso iMouse T50 - Wireless Programmable Ergonomic Trackball Mouse. Optical - Wireless - Radio Frequency - 2.40 GHz - No - Black - USB - 4800 dpi - Trackball, Scroll Wheel - 7 Button(s) - Symmetrical. Meet 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. It's 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 motion, reducing hand movement and space. This mouse trackball is also easy to maintain