They'll set you back tens of thousands of dollars each.
And the Swiss watchmakers behind these luxury time pieces rely on China to spend the cash.
But some high-end brands are starting to see worrying signs of slowing spending from Chinese tourists.
Reuters' Sarah White is at the international watch fair in Geneva.
SOUNDBITE (English) SARAH WHITE, REUTERS CORRESPONDENT, SAYING:
"People have been worried about China and the luxury good industry for a little while now, since about last summer, when fears started emerging about the knock-on effect that a trade war between the U.S. and China would have on a consumer base that makes up about a third of the industry's sales. Big companies like LVMH, like Kerring the owner of Gucci, rely on this clientele for a big chunk of this business. We had some indication of that from Richemont last week, the owner of Cartier, that there has been a slight slow down in external markets like Hong Kong, where Chinese travelers have been squeezed by the fact that their local currency has fallen against the Hong Kong dollar, and that's affecting their purchases abroad. All of this has contributed to investor jitters about whether this huge pocket of demand is going to start diminishing."
But government measures like cuts in import taxes are pushing more of those shoppers to splurge domestically.
Some companies are still banking on demand shifting to mainland China to fuel growth - as well as interest from the 20 to 30-year-olds.
(SOUNDBITE) (English) FOUNDER AND CEO OF DIGITAL LUXURY GROUP (DLG), DAVID SADIGH, SAYING:
"I think that you have two types of drivers that are extremely important. In one hand, you have clients becoming much younger in China, much more connected, much more educated, you know a bigger (number) of women also, as clients, so, that is one element. And in one other you have the platform, the ecosystem that is evolving at a really fast pace, so if you look for example at the e-commerce market places in China, you can see that this is something that is changing really fast and providing obviously interesting opportunities for brands."
As Sadigh told Reuters - China's "love story" with luxury watches will continue to flourish.