https://medium.com/bolt-blog/how-it-s-made-series-beats-by-dre-154aae384b36
Lots of optimizations are to be expected in a product manufactured in the millions of units: snaps and glue are used for assembly rather than screws (which require lots of human manipulation) and almost every part is injection molded plastic (which is essentially free at high volumes).


TL;DR: the authentic pair is nearly identical to the counterfeit one.