Kasparov was known for weaponizing his watch, taking it off during play and only putting it back on to send a message to his opponent that the game was as good as over, in Garry's favor of course. He's been an ambassador for Audemars Piguet.
A sharp-eyed Chess24 member recently spotted Naka sporting a new Rolex.
I recently saw a pic of Gawain Jones wearing a Tissot Visodate.
Do you have any GM watch-spotting to share? What watch(es) are you rocking?