Expert Mouse Wired Trackball

Description: Expert Mouse Wired Trackball TrackballWorks lets you customize all 4 buttons, set cursor speed DiamondEye optical tracking technology for premium cursor control and accuracy Award-winning Scroll Ring lets you scan up and down pages with ease Large 55mm ball is designed as a perfect sphere to provide exceptional precision Detachable wrist rest supports hand and wrist for ergonomic comfort Reliable wired USB connection Wired 180cm USB cable provides reliability and avoids need for batteries Detachable wrist rest cradles hand in comfort PC and Mac compatible Mac running OS X or later with an available USB Port. Internet connections or CD ROM drives to install the software.Compatible with Windows7, Windows XP, Windows Vi | Usage: Office | Usage: Notebook | Sensor: Trackball | No. of buttons: 4 | No. of scroll wheels: 1 | Shape: Universal | Connection: Wired | Interface: USB | Illumination: No | Power: USB 5V | Color: Black