Ensure effortless navigation and precise control for enhanced productivity with the Kensington Orbit 1, 600dpi wireless optical trackball mouse. It includes a patented scroll ring that facilitates seamless page scrolling. Its customizable buttons offer personalized control, while dual wireless connectivity options (2.4GHz and Bluetooth) with 128-bit AES encryption ensure secure connections. | Kensington Orbit 1600 DPI Wireless Optical Trackball Mouse - Black