Royal Oak Offshore Diver Stainless Steel / Black - Turquoise

In Context

At 42 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. At 14.1 mm it is a tall case, and it will catch on a cuff. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. 300 m is a professional diving rating, far past any demand a wrist is likely to make of it.

The movement winds itself from the motion of your wrist. 70 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

15720ST.OO.A355CA.01 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black dial with a ceramic, stainless steel case.

Developed and manufactured in-house by Audemars Piguet, Calibre 4308 is a selfwinding automatic movement used in the Royal Oak Offshore Diver collection. The movement operates at a frequency of 28,800 vibrations per hour (4 Hz) and comprises 234 components with 32 jewels. It measures 32 mm in diameter and has a thickness of 5.2 mm. The power reserve is approximately 60 hours. Calibre 4308 provides indications of hours, minutes, central seconds, and date. It is engineered for robustness and daily wear, and is visible through a sapphire caseback in compatible references.

5 other watches in the library run the Audemars Piguet AP 4308.

Audemars Piguet

Royal Oak Offshore Diver Stainless Steel / Blue

15720ST.OO.A027CA.01 · 42 mm

Audemars Piguet

Royal Oak Offshore Diver Stainless Steel / Black - Pink

15720ST.OO.A010CA.01 · 42 mm

Audemars Piguet

Royal Oak Offshore Diver Stainless Steel / Grey

15720ST.OO.A009CA.01 · 42 mm

Audemars Piguet

Royal Oak Offshore Diver Stainless Steel / Green

15720ST.OO.A052CA.01 · 42 mm