Gold watch - Matthias Schoenaerts - A Bigger Splash
The watch has three white/silver subdials, so it's likely to be a Chronograph watch. The bezel has 12 hour markings (hard to see if those are numbers or dots or stripes).
If you know the brand of this watch, send a message here.
Complete the look
In the same film he wears a pair of yet unidentified red sunglasses and a pair of Dior sunglasses.