Ok, look at the pictures. The one on the left is rounder, while the one on the right is almost completely rectangular, very similar to an Iphone, but narrower. The one on the left has a wider earpiece grille, almost twice as wide as the one on the right. The one on the left has a little round mouthpiece, while the one on the left doesn't. The one on the left has rocker buttons on the right, the one on the left has them on the left. The one on the right has the buttons closer to the screen than the one on the left.
Such simple differences show it's clearly a different body, likely the way the Eris is just that slight bit different than the Hero.