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