By default, the widget generates an unordered list of permanent links to blog posts with the post title. The product listing ul has a class of wpec-history.
Coming in future versions is the following…
Support for post thumbnails
Support for logged out users
Dashboard for tracking what products your users have looked at.
Hooks and Filters (dependent on user feedback. I can’t really see a need for them right now as the plugin is quite simplistic).