Here’s the guide to tell you how to pick out a stylish watch.

“None of that stuff matters to me,” said the actor—who just signed on as the global brand ambassador for Piaget—in an interview with GQ. “To me, what matters about a watch is that it’s timeless, it’s elegant, it’s functional at a high level, and that it’s flexible.”

With this he pointed at the Piaget Polo S on his wrist. “I could wear this at a black-tie event, or I can wear this running around with my daughter at a water park. That’s what matters to me.”

But even if you don’t have $9,350 to spend on a timepiece (that’s how much the less expensive of the two Polo S models will cost you), you can still find something that meets all of Reynolds’s qualifications for a watch that’s worth your time. Here are his four points to keep in mind when picking out your next timepiece:

Can you wear it everywhere?

“You’re given very few options as a man for accessories,” Reynolds said. “When you look at the population, men typically have one or two accessories: a wedding ring and a watch. So watches need to speak volumes about that person.” The easiest way for your watch to become as synonymous with your style as your favorite pair of jeans? Get something that you can wear all the time (meaning something that will work as well with a suit as it does with a T-shirt and khakis). This is especially important for guys who don’t have a ton of money to spend on multiple watches for different occasions in the first place.

Can it take a beating?

“For me, the watch needs to be something that is slightly indelible,” Reynolds said. Because of its unavoidable proximity to your hands, any watch you own is bound to take a lick or two. Focus on something in a scratch-resistant material (stainless steel is a great bet) with a solid movement (the interior mechanism that makes a watch tick), and you’re good as gold.

Is it future-proof?

“Smartwatches don’t do it for me,” said Reynolds. “I flirted with one once, and unfortunately it met its demise against a brick wall.” And while a mechanical watch can’t tell you how many calories you’ve burned in a day, there are definite benefits to something that won’t be made obsolete by changing technology.

Will it look good in a few decades?

Reynolds is planning on passing down his Polo S to his daughter, James. Her initials are already engraved on the back of the case. “She just likes to keep tapping on it. I think she’s marking her territory,” he said. “She’s saying, ‘That will be mine one day,’ and it will.”

In that sense, it’s a lot like other watches that have been a part of the actor’s life. “I can look at my father, and it doesn’t matter what kind of watch he had, but I can see that watch as clear as day on his wrist right now, ’cause it’s been there for 40 years. I have my grandfather’s WWII watch,” he added. “I never met him, but I still feel like I have a piece of him. Watches have a kind of magical, weirdly spiritual element to them that I think is sometimes underestimated.”