The Macintosh PowerBook featured 4mb of RAM, a 16 MHz processor, and up to 80mb of hard drive space. This PowerBook created a new style of "notebook" portable computers. Unlike its predecessors, the PowerBook's lid covered the entire top of the computer, rather than just the front half.
The Macintosh PowerBook also moved the built-in trackball to a central location in front of the keyboard, and this innovation quickly became standard in portable computing devices.
With a 2-4 hour battery life, the PowerBook wasn't quite as long-lived as the Macintosh Portable, but the small size and light weight of 5lbs made up for it.
The first PowerBook retailed for $2500. This time Apple had succeeded in creating a portable computer that still has fans among vintage Apple collectors.
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