This product adds some expanded--and, even better, USEFUL--options to the Mutant Future core book's Technology rules.
But the things I liked most were the Item Strength / Item Saving Throws sections. Blowing up Artifacts is just as important as getting them to work in the first place.
All in all, a snazzy little product, and a steal at the price.
(There is a lengthier-ish review at my blog, A Field Guide To Doomsday.)