I noticed a lot of posts recently about size insecurity lol. I’m rocking my vintage 34mm mechanical Longines today, and wanted to post a picture on my 7.5” wrist. I don’t wear this watch often, but I always think it wears very nice when I do. Your own opinion matters more than anyone else’s :)
I have a 1984 Rolex OP Date with 34mm, and my wrist is 7-1/4", it looks and feels fine to me. Yours looks great. My largest watch is 43mm, and it also wears fine. Different look/uses, but it really is a matter of personal perspective & opinion. I kinda think, as a rule for me, around 39-40mm is my sweet spot, but everyone is different. That is a great office/dress size for you.