While checking out the GQ website, I came across this gem from The Style Guy:

I am getting married soon, and I am not sure what style timepiece I should put on my wrist. I’ll be wearing a very traditional one-button black tuxedo, a white shirt, a vest and a white Windsor tie. My cuff links are sterling silver. The wedding is on a Saturday morning. Would it be more appropriate for me to wear a Cartier rectangular face with Roman numerals and a black leather band or a Rolex with a stainless-steel band? I’m concerned that the Rolex might be too flashy. I am leaning toward the Cartier, with the leather band.

You’re lucky. You must have very few other problems to be so concerned with this. If I were you, I wouldn’t worry about what’s appropriate; since you are planning to wear evening clothes in the morning, appropriateness is no longer a consideration. But given your choices, I do think you’re better off with a dress watch—the Cartier—than with the Rolex, which I’m presuming is something of a sports watch. Unless, of course, the wedding will take place underwater, in which case the Rolex will function down to 300 meters. If the Cartier watch is gold, you might consider wearing gold cuff links (and studs?) or even asking your best man to be the timekeeper.