Mouse Systems' A3 Trackball is best described by the text on the box, which was dated 1993.
The A3 Trackballl gives you ultra-smooth fingertip control for your Mac!
The A3 Trackball features 3-Button Power TM for three times the functionality. Imagine saving a file by clicking the right button, printing a file by clicking the center button, and using the left button to "point and shoot."
Now you can have instant access to your favorite commands. With the A3 Trackballl you can assign any key sequence (Macro) to any button for the ultimate in functionality.
If you're looking for the ultimate in control, accuracy, and comfort get your hands on the A3 Trackball. You'll be amazed at its smooth fingertip operation, high-resolution accuracy, and natural ergonomic shape. Plus, it's A/UX, Mac X, X Window, and Mac OS compatible!
This package Contains:
Mouse Systems A3 Trackball back of package.