Most of the "tabs" modules that I've come across allow to to arranges multible modules on a page in a tabbed structure. I have used Aggregator from DNN Stuff and think it is a nice module.
But, I think that you more need something to display tabs WITHIN a module. For that case you may need to create something yourself, and I would suggest that an approach based on jQuery might be best for that. So, you might want to take a look at
http://blog.theaccidentalgeek.com/p...Nuke.aspx, a blog entry from Joe Brinkman. Basically, Joe shows how to render a list as a set of tabs using jQuery.
Assuming your products model, I'm assuming that your module provides content for a module and that you could output the various elements -- features, specifications, description, etc. -- as list items and that some qQuery could then render that content as modules.
What are you going to be using to hold your products information and display it?