The quintessential dive watch is the Rolex Submariner, but with a diameter of 40mm and quite the wrist presence (there’s just a certain Rolex shine, isn’t there?), it appears too big on most smaller wrists. So, this list will focus on dive watches under 40mm. Just as important is how thick the watch is. For example, I recently tried on a Tudor Black Bay (41mm); it didn’t even look that bad from above, but at almost 15mm thick, it felt and looked like a tuna can on my wrist — Seiko Tuna be damned. And don’t get me started on the importance of lug-to-lug measurements. more