Kensington Orbit Wireless Trackball with Scroll Ring, Professional Computer Mouse with Bluetooth, (2.4GHz Wireless), Optical Tracking & AES Encryption Security, Left or Right Handed - Black (K70992WW)

Kensington's Orbit Trackball is all about keeping you pain-free. Its trackball reduces wrist movement, helping avoid repetitive strain injuries. You can still effortlessly scroll simply by spinning the dial. And no hand is left behind because its ambidextrous design fits both righties and lefties. Good to know - Set your speed just right with 4 DPI levels - from precise editing at 400 to breezy browsing at 1600 - Use the KensingtonWorks software to change button functions to best suit through your work... - Manufacturers part number: 367813