Audemars Piguet Chronographe Lady Royal Oak Offshore 26283ST.OO.D002CA.01 Steel - Black strap

Audemars Piguet Royal Oak Offshore Chronograph Collection updated in 2021

Just released by Audemars Piguet are five brand new Royal Oak Offshore Automatic Chronographs with a case size of 42 mm, which is the original version of the series and I believe it is the best. Earlier this year, the Associated Press released an updated version of the ROO chronograph, using a 43 mm case, equipped with a new internal 4401 movement and interchangeable strap. Now, we see that these five new Royal Oak Offshore Chronographs with smaller 42mm cases have received the same upgrades and improvements. Yes, there are a total of 10 new Royal Oak Offshore Automatic Chronographs this year. Although I will focus on the new 42mm model here, I have also added information about the larger 43mm series. If it becomes confusing, a simple way to distinguish is to identify the horizontal (3,6,9) chronograph subdial on 43mm and the vertical (6,9,12) subdial on 42mm.

All five new 42mm ROO Chronos are equipped with the new self-winding integrated flyback chronograph Calibre 4404 movement, which is basically the same as the Calibre 4401 in the 43mm model. The only difference between the two is that the 4401 has a horizontal (3,6,9) chronograph sub-dial layout, while the 4404 has a vertical (6,9,12) sub-dial layout, which requires an additional movement board. 4404 is An integrated column wheel flyback chronograph with a vertical clutch, running at 28,800 vph, and having a power reserve of 70 hours.