Rafael Nadal—he of the superhuman tennis game that is a revolution unto itself—now has the perfect wristwatch to match. Forbes reports that the Spaniard’s new Richard Mille RM 27-02 is worth close to $800,000 and is built to withstand forces of up to 5,000 Gs.

Why is it so expensive? Because it’s made to exacting specifications for a professional athlete to wear while he plays. Not just any professional athlete, a player who plays the game like he’s a Tasmanian Devil that has been set on fire. And a ton of research and development goes into it. Reportedly, Nadal broke six watches when he first started testing prototypes from Richard Mille in 2010.

“We have a limited production," Mille said, according to Forbes. "When you divide all those developments by the number of pieces we produce, you come out with a very high cost. And this is why we are considered the Formula 1 of the watch business, because in Formula 1 you have exactly the same sort of situation: you develop all the time and you release only a few units. But this is what we love to do.”

You can find read the Forbes article about Nadal’s watch here.

And if you really want to dig deep, and see some great photos, go here.

Photo Source: Stefano Galuzzi/Richard Mille