Kensington Orbit Trackball With Scroll Ring Two Buttons Black Hand-Friendly Design

Quickly and easily navigate through web pages and documents with this trackball that features a scroll ring. Ambidextrous design delivers all-day comfort to either hand. Optical technology provides you with precise tracking. Customize buttons with TrackballWorks"?software. Includes detachable wrist rest. Connector/Port/Interface: USB; Left/Right Hand Use: Left/Right; Mouse Technology: Trackball; Wired/Wireless: Wired.