A. Lange & Söhne

foversta
[PuristSPro Moderator]
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You can't compare these approaches.

You have several ways to increase the power reserve: basically, if you don't change the barrel and of course, the frequency, you have to influence the behaviour of the balance wheel. If you use new materials to lighten the balance wheel, to reduce its inertia, to influence its quality angle like Patek did it, with a similar lay-out and with a similar barrel, yes, you improve the power reserve as the movement is less energy consuming. It is exactly what Breguet did with its 10hz watch. Without the new materials, the watch would have been bigger than a plate.

Lange is not in this trend: they wish to use only traditional materials. So except some minor changes on the balance wheel to improve its behaviour, the only way is to put a bigger barrel. It is also what they did with the new caliber of the 1815 chronograph. There was enough space to do it. It appears that it is not the case with the Datograph because the power reserve remains the same.

I prefer that Lange keeps its traditional approach. Some brands are involved a lot with the new materials like silicium but it is something I don't expect from Lange.

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