Royal Oak Self-Winding 41 Blue Topaz

In Context

At 41 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. At 10.5 mm thick it is about average for a modern wristwatch. 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. Rated to 20 m, it is protected against rain and splashes and nothing beyond that.

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.

15514BC.TO.1284BC.02 stands on its own in this catalogue — no other reference here shares its base number. It pairs a blue gloss dial with a topaz case. It was a limited edition.

Audemars Piguet's in-house automatic for 43 mm cases, developed as part of the movement generation that replaced the 3120. Hours, minutes and seconds only, at 4 Hz, with a reserve of at least 70 hours — long enough that a watch left off the wrist over a weekend is still running on Monday.

32 other watches in the library run the Audemars Piguet AP 4309.

Audemars Piguet

Royal Oak Self-Winding 41 Emerald

15514BC.EE.1284BC.02 · 41 mm

Audemars Piguet

Royal Oak Self-Winding 41 Tanzanite

15514BC.TF.1284BC.02 · 41 mm

Audemars Piguet

Royal Oak Self-Winding 41 Blue Sapphire / 50th Anniversary

15514BC.SS.1284BC.01 · 41 mm

Audemars Piguet

Royal Oak Self-Winding 41 Green Camouflage

15514BC.YY.1284BC.02 · 41 mm