Kensington Orbit Wireless Trackball with Scroll Ring - Black - Optical - Wireless - Bluetooth/Radio Frequency - 2.40 GHz - Black, Red - 1600 dpi - Scroll Ring, Scroll Ball - Symmetrical - 1

The Kensington trackball legacy continues with the latest addition to the patented Orbit Trackball with Scroll Ring - the Orbit Wireless Trackball with Scroll Ring. You asked for wireless, and we delivered, with the same great features that have made the Orbit Trackball with Scroll Ring so popular, including a patented scroll ring that allows you to scroll up & down pages with ease; customizable buttons; dual wireless connectivity offering the flexibility of 2.4 GHz and Bluetooth (3.0 and LE), with 128-bit AES government-grade encryption security; four DPI settings (400, 800, 1,200, or 1,600) that let you easily adjust the cursor speed to fit your needs; a detachable wrist rest; ambidextrous design; and plug-and-play ease for Mac or PC

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