Specs are quantitative aspects of the option such as the price
Pros
Pro
Free
This is a free educational version of Zbrush Core. It allows you to get used to the Zbrush UI without paying for it. More or less, a transitional package to Zbrush or Zbrush Core.
Cannot sell any products you make using this software. You'll have to upgrade your files to Zbrush Core or the standard Zbrush. Also will need License for either Zbrush Core or the Standard Zbrush depending on which one you upgrade to.