Kevin Federline Watchspotting

The latest tacktacular pictures of Kevin Federline, the husband of Britney Spears, are up at A Socialite's Life. I'm particularly interested in the diamond watch he's sporting. I haven't been able to determine what one it is so I'm hoping Luxist readers can help me out. Based on the style of the bracelet and the Roman numerals, I'm guessing that it's a Roger Dubuis.