Kensington Orbit Mouse Wired Ergonomic TrackBall for PC, Mac and Windows with Scroll Ring, Ambidextrous Design Optical Tracking Blue (K72337EU)

Amazon

Scroll Ring and Medium Ball - Spin the dial to move up and down web pages or documents with complete ease. The blue 40 mm ball has been specially designed with an absolute spherical, hard surface for precise tracking and control KensingtonWorks Customization - Free downloadable software provides an even more personalized experience, giving you the ability to assign a wide variety of program functions to each of the 2 buttons, as well as adjusting cursor and scrolling speeds Optical Tracking Technology - Provides precise cursor movement for superior accuracy so you can get where you want on the screen quickly with less hand movement, improving productivity and efficiency Detachable Wrist Rest - Soft cushioning cradles the hand and wrist in ergonomic comfort for pain-free productivity during extended periods of activity on the computer Ambidextrous Design - Works equally well for both right-handed and left-handed users to get the most out of their trackball Plug and Play Installation - Quickly get clicking and scrolling with fast, simple installation through the reliable wired USB connection, plus it doesn’t need batteries PC and Mac compatible - Compatible with Windows Vista and Mac OS X

123ink

The Kensington Orbit Trackball improves your productivity with the convenient scroll ring. The computer mouse is equipped with 2 buttons that can be programmed as desired with the Kensington software. The symmetrical design of the mouse is suitable for both left and right handed users. The optical sensor provides superior accuracy. Supplied with 1.5m USB cable. As well as stocking the popular Canon, Brother, Epson and HP brands, amongst others, you can also opt for the 123ink compatible versions. Our own-brand ink cartridges and toner cartridges contain more ink than the original brands and will save you money! Not to mention that all of our 123ink products also come with a 100% lifetime guarantee. On top of selling printers and printer consumables, we also have tapes, labels, and an extensive range of office supplies.