The main difference is that due to the rep having an A7750 chrono movement, this will affect things like the date wheel, thickness of the case and lugs, as well as the spacing between the subdials. Overall the materials look similar but feel different and I’ll compare everything below:
Cases: The cases on both the gen and rep are made from carbon composite, titanium, and stainless steel. The gen has a better textured carbon complotiste and the titanium on the crown and pushers feels more smooth and better shaped.
The rep is about 1.5-2mm thicker and the lugs are significantly thicker and longer.
Straps: the blue fabric strap on the gen is very soft and premium in feel. The rep is nice but feels rough and less plush. The color is also different
Cases: The cases on both the gen and rep are made from carbon composite, titanium, and stainless steel. The gen has a better textured carbon complotiste and the titanium on the crown and pushers feels more smooth and better shaped.
The rep is about 1.5-2mm thicker and the lugs are significantly thicker and longer.
Straps: the blue fabric strap on the gen is very soft and premium in feel. The rep is nice but feels rough and less plush. The color is also different