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My understanding of the term ‘dress watch’ refers to mechanical strap watches either manual or automatic wound which tend to be worn with long shirt sleeves and often a jacket. Dress watches primarily have more refined features and in most cases thinner movements than their sporting counterparts.
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Design… Classically, dress watches are considered to be watches that you would wear with something more formal, especially a tuxedo. … A two-handed, time-only watch on a legible white dial with only the company marquee and the hour track printed onto it is perhaps the ultimate expression of a true dress watch.
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Classic dress watches are known to be small, and whilst these will look great with a suit, they will look a bit off with too casual attire. But as long as you have that in mind and opt for a dress watch that is slightly larger, it can look casual enough to be worn on casual occasions.
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A dress watch is supposed to be elegant and modest. A watch that is minimalistic and adds a touch of style, flair, and sophistication, regardless of whether it is worn with formal, semi-formal, or casual attire, is a dress watch.
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Characteristics of a Dress Watch:
A Slim Profile – As opposed to their sport model cousins, a dress watch typically has a slimmer profile. …
Smaller or Average Case Size – Most dress watches fall in a 34mm to 40mm case size.
Leather Strap – Dress watches are typically outfitted with a leather strap.

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