Wired Trackball Expert Mouse

• The large ball (55 mm) ensures maximum accuracy and convenience of control
• The award-winning scroll ring lets you scroll pages up and down easily.
• DiamondEye optical tracking technology provides excellent cursor control and exceptional accuracy.
• Four buttons configurable via Kensington TrackballWorks software
• Detachable wrist support
• Compatibility with Windows 10, 8.1, 8, 7 and macOS 10.8