Large ball Trackball Mouse with Scroll Ring for comfort and precision Customizable 4-Button design via TrackballWorks software Compatible with Windows (including Windows 8) and Mac OS Computers This premium trackball mouse employs Diamond Eye optical technology for smooth, precise cursor movement. Its large ball gives you maximum precision and control while tracking. The comfortable, ergonomic design includes a detachable wrist rest that cradles hand in comfort. Award-winning Scroll Ring allows precise fingertip scrolling. Designed to maximize your productivity. Connector/Port/Interface: USB Left/Right Hand Use: Left/Right Mouse Technology: Trackball Wired/Wireless: Wired.
