There are other flaws as well of course. Gen is 46mm, rep is 42. Gen is ceramic case, rep is pvd. Gen has white datewheel. Rep is black (same as gen top gun). I'm sure there are others but these are the obvious ones. I still think it is a great looking watch, regardless of accuracy. Kinda reminds me of an MBW Nautilus. Not an exact replica of any one Patek Nautlius model, but still a high quality timepiece.