Xzibit wears a TAG Heuer Monaco

In xXx: State of the Union (2005), Ice Cube takes over the franchise as Darius Stone, a former Navy SEAL pulled out of a military prison to stop a coup against the President. Xzibit plays Zeke, the chop-shop owner whose garage of stripped cars and stashed weapons becomes Stone's base of operations.

Zeke's watch is usually identified as a TAG Heuer Monaco, the square chronograph Steve McQueen wore in Le Mans. It never comes into clear enough focus on screen to confirm the model, or even the brand, so it stays a possible Monaco and nothing firmer.