Rotonde de Cartier Calendar Aperture and Power Reserve Stainless Steel / Silver

In Context

At 40 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. At 8.94 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 30 m, it is protected against rain and splashes and nothing beyond that.

The movement is hand-wound, so winding it becomes part of the day rather than something the watch does for you. 43 hours of reserve carries it overnight, but not through a weekend in a drawer. At 21,600 vph the seconds hand advances 6 times a second, the slower and more audible rate of an older design.

W1556369 stands on its own in this catalogue — no other reference here shares its base number. It pairs a silver guilloche dial with a pink gold case.

Hand-wound movement with power reserve indicator and date.

4 other watches in the library run the Cartier 9753 MC.

Cartier

Rotonde de Cartier Calendar Aperture and Power Reserve Pink Gold / Silver

W1556252 · 40 mm

Cartier

Santos Dumont 38 Date / Power Reserve Pink Gold / Silver

W2020067 · 38 mm

Cartier

Rotonde de Cartier Calendar Aperture and Power Reserve White Gold / Grey

W1556253 · 40 mm

Cartier

Santos Dumont 38 Date / Power Reserve Pink Gold / Grey

W2020068 · 38 mm