The Replica Baume&Mercier watches in the movie differs from the pictured version in that the movie watch has gold screws in the lugs holding the strap in place, which the pictured watch does not. Bvlgari obviously had some sponsorship in this movie, and the next watch Downey Jr. is seen wearing is a far fancier Bvlgari.Sadly, this is the closest picture I could get of the gold Bvlgari watch that is worn in Tony Stark's garage/workshop. The movie watch shares the gold case and "Bvlgari Bvlgari" names on the bezel, though it has a new chronograph feature which utilizes two retrograde indicators on the each side of the face. Traditional Bvlgari chronograph watches features typical round subdials for the chronograph registers. Use of retrograde registers is a stylistic approach that offers a more unique sense of functionality. Assuming I find images of the exact Replica Bell Ross watchesI will place them in this post.
This watch is visible at Downey Jr. rolls around in the dust avoiding enemy fire. The Hublot Big Bang is a fitting watch for Tony Stark, as it represents high technology and luxury. The watch is immensely popular in the Hollywood circuit, but then again, most attractive luxury watches are. I imagine that Robert Downey Jr. probably has a collection of these in real life. Though he admits to wearing the Bvlgari Replica Breitling watches in Iron Man because of the sponsorship.After Tony Stark is kidnapped, his captors probably take the Big Bang and trade it for some more arms and armor. After his daring escape and return to Malibu, we see Tony Stark wearing a Bvlgari Diagono Sport with a black face and black leather band while in a tuxedo.