In the latter case, you have a great deal of elegance from an engineering standpoint – after all, the fewer parts there are, the less there is to go wrong, and there is real beauty and intellectual satisfaction in this kind of simplicity. However, in mechanical watchmaking, there are a plethora of types of elegance, each with its own satisfactions, and a classically implemented perpetual calendar built on the 1120 – the caliber 1120 QP/1 – is a direct connection to a tradition of perpetual calendar construction that’s several centuries old. Caliber 1120 QP/1 uses as traditional a perpetual calendar plate as you can find in a modern wristwatch, with a program wheel, moonphase, and all the demanding-to-make steel cams and jumpers that make this sort of perpetual calendar such a rich store of watchmaking techniques and history.