Conor McGregor ain't fighting on Saturday's historic UFC card ... but he's already won the weekend -- copping one of the most insane watches you'll EVER see!!
The Notorious snagged an ultra rare Patek Philippe on Friday ... and claims its one of only 25 in the world!!!
"And yes you guessed it. I’m number 12, certified," the Proper #12 honcho said.
The watch's specs are ridiculous ... according to Conor, its made in platinum and honey comb green with a diamond and crocodile strap -- and has a nickname of "#TheHulk."
"They will also never utilise this colour scheme again," the UFC superstar says.