Don’t be baffled with the “XL” moniker — this remains a modest-donning watch at 31mm large, about 41mm in length, and under eight.4mm thick. The Rolex Submariner is Just about the most recognizable models in watchmaking history. Since the title implies the genesis on the Submariner (or "Sub") in 1952 https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/