The Kensington trackball legacy continues with the Orbit® Wireless Trackball with Scroll Ring. This trackball features a patented scroll ring that allows you to scroll up and down pages with ease, customisable buttons, dual wireless connectivity (2.4 GHz, Bluetooth 3.0 and LE) with 128-bit AES government-grade encryption security, four DPI settings (400, 800, 1,200, or 1,600) to easily adjust the cursor speed to fit your needs, a detachable wrist rest, ambidextrous design and plug-and-play ease for Mac or PC.