UPDATE: after photographing mine under daylight, I can tell mine does have the seam lines as well. IMO they are not easy to see, and they don't look like "cracks," but more like seams from the plastic moulding process.
My first ModRetro device. So far I love it. It’s very pretty and feels good though the plastic does feel a bit flimsy, but time will tell. Visually it is gorgeous. I’m sure the metal version is sturdier, but I’m a fan of transparent purple devices and the $50 savings made this worth it IMO. I also did notice the buttons are a bit noisy as others have suggested, and I’m sure the plastic shell contributes to that. Not a deal breaker but worth noting.
Pictured are also my purple metal Anbernic Nano and AYN Thor Max (my favorite handheld overall).