There isn't any regulations, but there’s a great deal to contemplate, from cost and complications to circumstance content and dimension. And there’s quite a bit to discover, from prestigious makes’ dress watches to independents performing terrific things. Sounds like the Audemars Piguet Royal Oak, the watch having an octagonal bezel https://www.watchesworld.com/a-guide-to-10-of-the-best-dress-watches/