In the name https://www.iwuhren.de/produkt-Sammlungen/aquatimer/ of horological science, I figured I'd try the OP 39 on too, immediately after taking off the OP 41. It felt like taking off a pair of new bench-made shoes and throwing on a comfy pair of sneakers. Both are great, but one just wears much easier. If you want more on the OP 39, definitely go check https://www.iwhorloges.cz/best-category/portugieser/ out this story https://www.cuhren.de/produkt-Sammlungen/ballon-de-cartier/ I wrote when the white-dial version came out, but I'll say it one more time for good measure: I love this watch, and it's damn near perfect on the wrist.